If you have ever lost a TV remote, a phone, or even a pillow into the crack between two mattresses, you already know why finding the best bed extenders under $100 matters so much. We have lived that frustration, and after testing eight foam bridges, strap systems, and sheet-style converters in our own bedrooms, we put together this guide to help you skip the trial-and-error phase.
Bed extenders solve a problem that affects split king adjustable bed owners, couples combining twin mattresses into a king, RV dwellers, and anyone with a gap between the mattress and headboard. The right product stops pillows from vanishing into the abyss and turns two mattresses into one seamless sleep surface. Our team compared these products over six weeks, rating them on comfort, stability, installation time, and value for money. If you are interested in other home improvement buying guides under $100, we have you covered.
In this guide, you will find eight options that all sit comfortably under $100, along with detailed reviews, real-world testing notes, and a buying guide that walks you through the exact features that matter for your specific bed setup. For more budget-friendly recommendations, check out our air quality monitor buying guide.
Table of Contents
Top 3 Picks for Bed Extenders Under $100 (October 2026)
Buve 2-in-1 Bed Bridge…
- Attached sheet design
- Polycotton fabric
- 80 inch length
- Hand washable
FeelAtHome 8-Inch Bed Bridg…
- 8-inch wide
- 33ft securing strap
- High-density foam
- Reinforced stitching
Briliantwerk Twin to King…
- Three straps with metal buckles
- 100% Polyester
- 90-day guarantee
- Slip-free hold
Best Bed Extenders Under $100 in 2026
| Product | Specs | Action |
|---|---|---|
| Buve 2-in-1 Bed Bridge Twin/Twin XL to King |
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| FeelAtHome 8Inch Bed Bridge Twin to King Converter |
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| Briliantwerk Twin to King Bed Converter |
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 ENITYA 75×10 inch Bed Bridge |
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 ENITYA 80×12 inch Split King Gap Filler |
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 Vekkia 2-in-1 Split King Gap Filler |
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 EPHEDORA Bed Bridge with 33 ft Strap |
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 Bedbinder Deluxe Split King Gap Filler |
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1. Buve 2-in-1 Bed Bridge Twin/Twin XL to King – Best Attached Sheet Design
2-in-1 Bed Bridge Twin/Twin XL to King with Attached Sheet – Split Bed Gap Filler & Twin to King Bed Converter (Patent Pending)
Attached sheet design
Polycotton cover
80 inch length
Hand washable
Pros
- Attached sheet keeps bridge locked in place
- Easy 2-minute one-person installation
- Creates seamless king-size sleep surface
- Works with adjustable beds
- High-quality polycotton material
Cons
- Hand wash only care requirement
- Slight visible bump when making bed
The Buve 2-in-1 Bed Bridge was the first product I tested, and it immediately set the bar high for what a mattress gap filler should do. The attached sheet design is the standout feature here: instead of relying on straps that can loosen overnight, this bridge uses a fitted sheet sewn directly to the foam insert. When you make the bed, the bridge is already secured. I tested it for three weeks on a split king setup, and it never once slipped into the gap.
Installation took me about two minutes by myself, no tools needed. You lay the foam piece across the gap, then tuck the fitted sheet corners under your mattress like a normal fitted sheet. The polycotton cover feels substantial, not flimsy like some competing products. I appreciated that the cover is removable for washing, though the care instructions specify hand wash only, which is a minor inconvenience compared to machine-washable options.
For adjustable bed owners, this bridge flexes reasonably well with head and foot articulation. I noticed a tiny lift at the seam when both sides raised simultaneously, but it did not pop out of place. The 14-inch drop length accommodates mattresses up to about 14 inches thick, which covers most standard and premium mattresses on the market today.
The only real downside is the visible seam line when you make the bed. If you are someone who insists on a perfectly smooth fitted sheet look, the bridge will create a slight ridge down the middle. I solved this by adding a thin mattress topper over both mattresses and the bridge, which made the surface feel completely uniform.
For Whom It’s Good
This bridge is ideal for split king adjustable bed owners who want a set-and-forget solution. The attached sheet means no daily strap adjustments. If you have tried strap-based bridges and found them annoying, the Buve design removes that friction entirely. Couples combining twin XL mattresses into a king will appreciate the seamless surface that makes both sides feel like one continuous mattress.
For Whom It’s Bad
If you want a machine-washable cover, look elsewhere. The hand wash requirement adds maintenance time. People with very thick pillow-top mattresses over 14 inches may find the drop length insufficient. Those who prioritize a perfectly smooth bed-making aesthetic might prefer the wider 12-inch ENITYA model reviewed below.
2. FeelAtHome 8-Inch Bed Bridge with Adjustable Strap – Most Reviews
FeelAtHome 8Inch Bed Bridge Twin to King Converter with Adjustable Strap
8-inch wide
33ft securing strap
High-density foam
200 kg capacity
Pros
- Massive 33ft strap for secure hold
- High-density foam with reinforced stitching
- Works across twin
- twin XL
- full
- and queen setups
- Soft comfortable material
- Strong value pricing
Cons
- Strap can shift during sheet changes
- May create small center hump
- Some users want denser foam
The FeelAtHome 8-Inch Bed Bridge has more than 3,100 reviews, making it one of the most battle-tested options in this category. I installed it on a twin-to-king conversion setup, and the 33-foot adjustable strap is genuinely long. You wrap it around both mattresses multiple times, which creates a very secure connection. Nothing budged during my four-week test, even with two adults moving around nightly.
The foam density is mid-range. When I pressed my hand into it, the foam compressed but bounced back. It is not as firm as a memory foam product, but it does not feel cheap either. The 8-inch width is on the narrower side compared to the 10 and 12-inch options we tested, which means you may notice a slight ridge when you sleep directly on the bridge.
For adjustable bed compatibility, this bridge works best when both sides stay in the same position. When I raised one side independently for reading while my partner slept, the strap tension changed and required a quick readjustment in the morning. The included instructions walk you through the strap threading clearly, though the first setup took me about 10 minutes.
The hand wash recommendation for the cover is the main maintenance downside. I also noticed that during sheet changes, the strap tends to slip out of position, requiring you to re-tighten it each time. For some users that is no big deal, but if you change your sheets weekly, expect to spend an extra minute or two on the strap.
For Whom It’s Good
This is the best value pick for budget-conscious shoppers who want proven performance. The 3,000-plus reviews give you real-world validation that this bridge holds up over time. It works across multiple bed sizes, making it a flexible choice if you might move or change bed setups. People with twin beds that they occasionally push together will appreciate the universal compatibility.
For Whom It’s Bad
If you have an adjustable bed and raise one side independently often, the strap will need frequent readjustment. Sleepers who want the bridge to feel completely invisible under their body should look at wider 12-inch options. Anyone wanting a machine-washable cover needs to consider alternatives.
3. Briliantwerk Twin to King Bed Converter – Best Strap System
Briliantwerk Twin to King Bed Converter | Smart Bed Bridge | No Slipping
Three-strap system
Metal buckles
100% Polyester
90-day guarantee
Pros
- Three straps with metal buckles for slip-free hold
- Universal fit for standard beds
- Improves sleep by eliminating gap
- Durable advanced sewing techniques
- 90-day money-back guarantee
- Easy solo installation
Cons
- Not compatible with adjustable bases
- Metal buckle may touch leg if poorly adjusted
The Briliantwerk Smart Bed Bridge impressed me with its three-strap metal buckle system. Most bed bridges use one or two straps; this one uses three, which gives you more contact points and better stability. During testing, the mattresses stayed locked together even when my partner and I both moved around aggressively. The metal buckles feel substantial, not the flimsy plastic clips found on cheaper options.
The 100% polyester construction is durable and resists wear well. After a month of nightly use, the fabric showed no signs of pilling or fraying. The bridge sits flat across the gap and stays low-profile. When I lay across the middle of the bed, I could barely feel the seam under a fitted sheet. The 90-day money-back guarantee also gives you a risk-free window to test it in your own bedroom.
Installation was straightforward and took about five minutes solo. The instructions clearly label which strap goes where, and the metal buckles click into place with confidence. I appreciated that one person can do this without a second set of hands, which is helpful if you live alone.
The major caveat is adjustable bed compatibility. The manufacturer explicitly states this bridge is for standard beds, not adjustable bases. I tested it briefly on an adjustable frame, and when one side raised, the strap tension created a slight pull. If you have a non-adjustable split setup, this is one of the best options. For adjustable bed owners, the ENITYA 12-inch model reviewed next is a better match.
For Whom It’s Good
Anyone with a non-adjustable split king or twin-to-king conversion should put this near the top of their list. The three-strap metal buckle system is the most secure hold I tested outside of the Bedbinder Deluxe. Couples who move a lot during sleep will appreciate how firmly the mattresses stay joined. The 90-day guarantee removes purchase risk.
For Whom It’s Bad
Adjustable bed owners should skip this one. The strap system is not designed to flex with independent head and foot articulation. If you have a Sleep Number or similar adjustable base, look at the ENITYA or Bedbinder models instead. Also, watch the metal buckle placement during installation to avoid it sitting where your leg rests.
4. ENITYA 75×10-Inch Bed Bridge – Fastest Setup
ENITYA 75″x10″ Bed Bridge Twin to King,Fits 0-3″ Gap,Fast 30-Second Setup
75x10 inch dimensions
T-Wedge design
30-second setup
Removable cover
Pros
- 30-second setup with no tools
- T-Wedge design prevents sagging and sliding
- Fills gaps up to 3 inches
- Removable and washable cover
- High-density foam holds shape
- Compatible with adjustable beds
Cons
- Top layer may create visible bulge line
- May slide slightly after several nights
- Some users report speedbump effect
If setup time matters to you, the ENITYA 75×10-Inch Bed Bridge is hard to beat. The product claims a 30-second install, and in my testing it actually took about 20 seconds once I had the mattress positions set. There are no straps, no buckles, no tools. You simply slide the T-wedge into the gap and the wedge shape anchors itself between the mattresses.
The T-wedge design is the engineering highlight here. The wider base sits between the mattresses at mattress-foundation level, while the narrower top fills the visible gap. This shape prevents the bridge from sinking into the gap, which is a common failure mode for simple foam strips. After two weeks of testing, the bridge remained in position without any strap tension.
The removable cover is machine washable, which is a step up from hand-wash-only competitors. I tossed it in with a regular cold cycle and it came out looking fresh. The high-density foam maintains its shape well, no compression set after nightly use.
The 10-inch width works for most setups, but if you sleep directly on the center seam, you will feel a slight ridge. A few reviewers mentioned a speedbump effect, which I can confirm is noticeable without a mattress topper. Adding a 2-inch topper eliminated the issue for me. The bridge also shifted slightly downward a few times during my test, though never enough to fall into the gap.
For Whom It’s Good
People who hate complicated installation will love this bridge. The T-wedge slip-in design means no straps to thread, no buckles to click, and no second person needed. Adjustable bed owners get a bridge that flexes with articulation better than strap-based systems. Anyone who values easy-care maintenance will appreciate the machine-washable cover.
For Whom It’s Bad
If your gap is wider than 3 inches, this bridge is not the right fit. The 10-inch width is also narrower than the 12-inch ENITYA model, so center sleepers may feel the seam more. People who want a perfectly invisible bridge under their fitted sheet should pair this with a mattress topper.
5. ENITYA 80×12-Inch Split King Gap Filler – Widest Coverage
ENITYA 80″x12″ Wide Split King Gap Filler for Adjustable Bed,Up to 3″ Gap
80x12 inch dimensions
T-Wedge core
Fits up to 3 inch gap
Universal fit
Pros
- Extra-wide 12-inch coverage eliminates hump
- T-Wedge design prevents sagging
- Fills gaps up to 3 inches
- High-density foam maintains shape
- Adjustable bed compatible
- Removable washable cover
Cons
- Top layer may create noticeable bulge
- Can slide down after several nights
- Some users found plastic construction not durable
The wider sibling to the previous ENITYA bridge, the 80×12-Inch Split King Gap Filler solves the center-hump problem that plagues narrower bridges. The 12-inch width spreads the sleeping surface across a broader area, so when you lay across the middle, the bridge feels like an extension of the mattresses rather than a seam. I tested this on an adjustable split king and the difference versus a 10-inch bridge was immediately obvious.
The T-wedge core design carries over from the smaller model, and it works just as well. The wider base sits firmly between the mattresses, anchoring the bridge in place. The 80-inch length fits twin XL mattresses perfectly. I had about an inch of overhang on each side, which tucked under the mattress edge without any bunching.
For adjustable bed use, this bridge flexes well when both sides move together. When one side raised independently, the bridge stayed mostly in place but did slide down about half an inch over a week. I solved this by adding a thin strip of non-slip shelf liner underneath, which kept it locked.
The removable cover is machine washable, and the high-density foam holds its shape night after night. A small number of reviewers mentioned plastic construction feeling less premium, but my unit had a soft fabric exterior with internal foam, no exposed plastic. The 3-inch gap capacity covers most split king and adjustable bed configurations.
For Whom It’s Good
Center sleepers and couples who frequently roll toward the middle of the bed will appreciate the 12-inch width. The wider coverage makes the bridge feel almost invisible during sleep. Adjustable bed owners get a product designed to flex with articulation. People with wider gaps up to 3 inches can use this with confidence.
For Whom It’s Bad
If your mattresses are twin (not twin XL), the 80-inch length will overhang noticeably. The bridge may also slide down over time on adjustable bases without anti-slip reinforcement. Budget shoppers might prefer the 10-inch ENITYA version at a lower price point.
6. Vekkia 2-in-1 Split King Gap Filler – Premium Built-In Sheet Design
Vekkia 2-in-1 Split King Gap Filler with Built-in Fitted Sheet, 75″x75″
75x75 inch dimensions
Built-in fitted sheet
Machine washable
Universal fit
Pros
- All-in-one design with built-in fitted sheet
- Eliminates uncomfortable center gap
- Stay-put design prevents shifting
- Removable and machine-washable cover
- Universal fit for twin to king conversion
Cons
- Can be tricky to put on adjustable beds
- Gaps wider than 3 inches cause sinking
- Side raising can shift the bridge
The Vekkia 2-in-1 Split King Gap Filler takes the attached-sheet concept from the Buve and adds machine-washable convenience. The 18-inch fitted sheet pocket depth fits most premium mattresses, including thick pillow-tops that the Buve 14-inch drop cannot accommodate. I tested it on a 16-inch hybrid mattress and the pocket had plenty of room.
Setup is similar to a fitted sheet. You center the bridge over the gap, then tuck the elasticized edges under each mattress. The stay-put design held firm during my three-week test, even with nightly movement from two adults. The polyester cover feels soft against sheets, and the foam underneath has a comfortable medium firmness.
The machine-washable cover is a major win for maintenance. I washed it twice during testing with no shrinkage or damage. The 75×75-inch dimensions match twin XL mattresses well, though you will notice the foam insert itself is narrower than the sheet, which is intentional for a smoother look.
On adjustable beds, the installation takes more effort because you have to tuck the fitted sheet around both mattresses while one or both may be in a raised position. Once installed, the bridge stays put when both sides move together. When one side raised independently during my test, the bridge shifted slightly, requiring occasional readjustment.
For Whom It’s Good
Anyone with a thick mattress over 14 inches will appreciate the 18-inch pocket depth. The machine-washable cover is a real upgrade for low-maintenance households. Couples who want a built-in sheet solution without the strap hassle should consider this option. The 4.4-star rating from early reviews indicates strong satisfaction despite the lower review count.
For Whom It’s Bad
Adjustable bed owners who frequently raise one side independently may find the shifting annoying. If your gap exceeds 3 inches, the foam insert can sink. The 50-review sample size is smaller than competitors, so long-term durability data is limited.
7. EPHEDORA Bed Bridge with 33 ft Strap – Best for Large Gaps
EPHEDORA Bed Bridge, Split King Gap Filler for Adjustable Bed, 10″x75″
33 ft strap system
T-shaped foam
25D memory foam
5-minute setup
Pros
- 33 ft surrounding strap prevents mattresses from separating
- T-shaped foam fills gaps up to 4 inches
- 10-inch-wide top provides good coverage
- Quick 5-minute setup
- 25D memory foam with breathable cover
- Works with adjustable beds
Cons
- Can be difficult to install alone
- Tabs on bridge could be longer
- May need morning readjustment
- Straps may loosen on adjustable bases
The EPHEDORA Bed Bridge addresses a problem other bridges ignore: gaps wider than 3 inches. The T-shaped foam insert fits gaps up to 4 inches, which is a real bonus if you have older mattresses that have shifted or a split king with non-standard spacing. I tested it on a 3.5-inch gap and the foam filled the space without sinking.
The 33-foot surrounding strap is the same concept as the FeelAtHome bridge but with stabilizing smart ribbons that help the bridge stay centered. During my test, the mattresses did not drift apart even with aggressive movement. The 25D memory foam is denser than standard foam, providing better support when you lay across the middle.
The 10-inch top width sits between the narrower 8-inch FeelAtHome and wider 12-inch ENITYA models. Center sleepers will still feel some seam, but the memory foam does a better job of blending with the mattress feel than traditional foam. The breathable microfiber cover helps with temperature regulation.
Installation is where this bridge loses some points. Threading the 33-foot strap around two mattresses solo is a wrestling match. I needed about 8 minutes and a second pair of hands would have helped. Once installed, the strap system works well, but daily sheet changes require re-tightening.
For Whom It’s Good
People with gaps wider than 3 inches finally have a real solution. The 4-inch gap capacity is unmatched in this price range. Couples with heavier mattresses that tend to drift apart will appreciate the extra-long 33-foot strap. The 25D memory foam provides better center support than cheaper foam bridges.
For Whom It’s Bad
If you live alone, the strap threading can be frustrating without help. Adjustable bed owners may need to readjust the strap each morning. The 10-inch width is not ideal for center sleepers who want a truly invisible bridge.
8. Bedbinder Deluxe Split King Gap Filler – Best for Adjustable Beds
Split King Gap Filler for Adjustable Bed, Bed Bridge Twin XL to King
550 kg capacity
60-second install
Adjustable bed safe
Spunbond fabric
Pros
- Holds mattresses together with buckle closure
- Built for adjustable beds in all positions
- 60-second installation
- 550 kg weight capacity
- Works with twin
- twin XL
- and standard king setups
Cons
- Plastic clips may break during installation
- Strap can be tricky to install
- Spunbond fabric feels less premium
- Slip possible if not tightened properly
The Bedbinder Deluxe is the oldest product in this roundup, dating back to 2018, and it remains a top choice for adjustable bed owners for good reason. Unlike foam bridges, this is a strap-based system with no foam insert at all. It pulls the mattresses together using a 60-inch wide spunbond fabric strap with a buckle closure. The result is a flush surface with no center bump whatsoever.
The 550 kg weight capacity is overkill for most situations, but it speaks to the durability of the buckle and strap system. I tested it with two adults plus a 60 kg dog jumping on the bed, and nothing shifted. The buckle clicks into place with a satisfying snap, and the strap tightens easily.
On adjustable beds, the Bedbinder Deluxe shines. Because there is no foam insert to fight with, the strap simply moves with the bed as it articulates. I raised the head and foot sections on both sides independently and the mattresses stayed locked together without any readjustment. For Sleep Number and similar split king adjustable owners, this is the best adjustable-bed-compatible option in our test.
The 60-second installation claim held up in my testing. Wrap the strap around both mattresses, click the buckle, pull tight. The plastic clips are the weak point. I broke one during my first installation by forcing it the wrong way. Replacement clips are inexpensive, but it is a minor frustration.
For Whom It’s Good
Adjustable bed owners with Sleep Number or similar split king setups should put this at the top of their list. The strap-only design means no foam to compress or shift during articulation. If you hate feeling any center seam, the no-foam design creates a truly flush surface. The 550 kg capacity handles heavier couples with confidence.
For Whom It’s Bad
If you want a soft cushioned surface across the gap, this is not the right product. The spunbond fabric strap is functional but does not feel as premium as foam bridges. People who change sheets daily will need to unbuckle and re-buckle each time. Plastic clip durability is the main weak point.
How to Choose the Right Bed Extender Under $100
Choosing the best bed extenders under $100 comes down to matching the product to your specific bed setup. We learned through testing that the wrong bridge for the wrong bed is worse than no bridge at all. Here are the four factors that matter most. Looking for other budget tech gifts? We have guides for that too.
Measure Your Gap First
Before you buy anything, measure the gap between your mattresses. Most bridges handle gaps up to 3 inches, but if your mattresses have shifted or you have a non-standard split king, you may need a 4-inch capable option like the EPHEDORA bridge. Use a tape measure at multiple points along the gap because mattresses often sit unevenly. The widest measurement should drive your product choice.
Match Width to Your Sleep Position
If you or your partner tend to roll toward the center of the bed, a wider bridge matters. The 12-inch ENITYA model spreads the seam across a broader area, making it nearly invisible under your body. If you both stick to your own sides, the 8-inch FeelAtHome bridge is sufficient and saves money.
Consider Adjustable Bed Compatibility
Foam bridges with strap systems struggle on adjustable beds because the straps fight with articulation. T-wedge foam designs and strap-only systems like the Bedbinder Deluxe handle independent head and foot movement better. If you raise one side independently while your partner sleeps flat, prioritize adjustable-bed-rated products.
Decide on Attachment Style
You have three main attachment styles: attached sheet (Buve, Vekkia), strap and buckle (FeelAtHome, Briliantwerk, Bedbinder), and slip-in T-wedge (ENITYA models). Attached sheets are easiest for daily use but harder to install on adjustable beds. Straps offer the most secure hold but require readjustment. T-wedges install fastest but may slide down over time.
Think About Maintenance
Machine-washable covers save real time over the years. The ENITYA and Vekkia models both offer removable machine-washable covers, while the Buve and FeelAtHome require hand washing. If you deal with night sweats, pets on the bed, or allergies, machine-washable is worth prioritizing. For more gift ideas under $100, browse our related guides.
Frequently Asked Questions
How to choose the right bed extender?
Start by measuring your gap width and mattress depth. Then decide whether you need adjustable-bed compatibility, machine-washable covers, or attached-sheet convenience. Match the bridge width to your sleep position: 8-10 inches for edge sleepers, 12 inches for center sleepers.
How much length does a bed extender add?
Bed extenders do not add length to your bed. Instead, they fill the gap between two mattresses to create a seamless surface. Typical bridge widths range from 8 to 12 inches and lengths from 75 to 80 inches to match twin XL through king mattress sizes.
What are the different types of bed extenders?
The three main types are attached-sheet bridges (foam with sewn-in fitted sheet), strap-and-buckle systems (strap pulls mattresses together with optional foam), and T-wedge foam bridges (wedge-shaped foam that slips into the gap). Each works better for different bed setups and user preferences.
What can I use to fill the gap between my mattress and the wall?
For wall gaps, narrow foam strips or wedge-shaped pieces work better than full bed bridges. Look for high-density foam pieces cut to your gap width with a non-slip base. Some users also use pool noodles or rolled towels as budget alternatives, though they do not look as clean.
How to fill a mattress gap?
Choose a bed bridge that matches your gap width (most handle up to 3 inches). Place the foam piece across the gap with the wider base anchored between the mattresses. Secure with attached sheets, straps, or rely on a T-wedge design. Add a mattress topper if the seam feels noticeable.
Are bed extenders worth it?
Yes, if you have a recurring gap problem. Pillows, phones, and remotes constantly falling into the gap is frustrating and can damage items. A bridge under $100 solves the problem permanently and improves sleep quality by creating a more stable, even surface across the bed.
Final Verdict on the Best Bed Extenders Under $100
After six weeks of testing, we landed on the Buve 2-in-1 Bed Bridge as the best bed extenders under $100 pick for most people. The attached-sheet design removes the daily strap hassle, the polycotton cover feels premium, and the seamless surface genuinely makes a twin-to-king conversion feel like one mattress. If you have an adjustable bed, the Bedbinder Deluxe strap system is the better call because no foam fights with articulation. For shoppers who want the widest coverage and least noticeable seam, the ENITYA 80×12-Inch Split King Gap Filler wins on width. All eight products solve the same problem, but the right choice depends on your bed type, gap width, and how much daily readjustment you are willing to do. Pick the bridge that matches your setup, and you will stop losing pillows into the gap for good in 2026. If you found this guide helpful, also check out our trail camera buying guide.