Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Your pillow has vanished into the gap behind the headboard again. Then you are on your knees with a flashlight, fishing a phone, remote, or glasses out of the gap between mattress and wall. A bed wedge gap filler — a shaped foam wedge that plugs the gap — stops the drop and keeps your pillow in place. Our top pick, the FeelAtHome Queen Bed Gap Filler, closes any gap from 0 to 8 inches and its non-slip bottom keeps it planted. The other picks below hold their shape, match your bed length, and stay put overnight.
I’m Mohammad Maruf — the founder and writer behind KitchPrep. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Most wedges ship vacuum-compressed and need a day or two to expand before they fit snug. The trick is matching the filler to your exact gap size and bed length. This guide covers nine of the Best Bed Wedge Gap Fillers, ranked by real-world grip and fit.
Our Picks at a Glance
How To Choose The Best Bed Wedge Gap Filler
Every wedge on this list does the same basic job: it plugs the space between your mattress and your headboard or wall so your pillow, phone, and glasses stop disappearing. Four things separate a wedge that works for years from one you shove in a closet — how wide a gap it covers, how long it is, what foam it uses, and whether the bottom grips.
Match the wedge to your real gap size
Bed gaps vary from home to home. Some frames leave a slim crack, others a wide trench. Most fillers here close a gap up to seven or eight inches, which covers the vast majority of beds. Measure your gap with a tape measure before you buy — pushing your mattress flush against the headboard first — so you pick a wedge deep enough to reach the bottom. A wedge that only fills the top of the gap will drop to the floor, and that is the single most common reason buyers return one.
Get the length right for your bed
Too short and the wedge leaves gaps at the edges; too long and it hangs off the sides. Fillers come sized for Twin, Full, Queen, and King beds, with queen options in the 60-inch range and king options running up to 76 inches. If your mattress sits on a standard frame, match the wedge length to your mattress width. Too-long models are an easy fix — you can center the wedge and even out the overhang — but a too-short wedge leaves a permanent gap you cannot close.
Quick Comparison
| Model | Best For | Gap Closed | Length | Thickness | Amazon |
|---|---|---|---|---|---|
| FeelAtHome Queen Bed Gap Filler★ Best Overall | Adjustable coverage | 0-8 in | 76 in | 5 in | Amazon |
| HABUTWAY Full Size Bed Wedge PillowBest Value | Full-size beds and kids’ rooms | 0-8 in | 54 in | 6 in | Amazon |
| MEGCXIT King Bed Wedge PillowTop Performer | King beds and sofa seams | See thickness | 76 in | 6 in | Amazon |
| EUHAMS Queen Bed Wedge Pillow | Firm gap filling | 0-7 in | 60 in | 6 in | Amazon |
| HOMBYS Foldable Wedge Pillow | Freestyle gap filling | 0-7 in | 60 in | 6 in | Amazon |
| Voctriam King Bed Wedge Pillow | King beds and dorm rooms | 0-8 in | 76 in | 6 in | Amazon |
| Teemour Patented Wedge Pillow | Grip and long-term shape | 0-7 in | 76 in | 6 in | Amazon |
| Kolbs Bed Wedge Pillow | Low-profile styling | See thickness | 60 in | 6 in | Amazon |
| HIGOGOGO Queen Size Wedge Pillow | Widest gaps and oversized coverage | 0-7 in | 60 in | 9 in | Amazon |
In‑Depth Reviews
1. FeelAtHome Queen Bed Gap Filler, 0-8″ Adjustable Headboard Wedge Pillow
Our pick — over 4.5★ from 300+ verified ratings; the strongest balance of quality and price.
The adjustable wedge that bends to fill gaps from zero all the way to eight inches
The FeelAtHome earns the top spot with the widest fit range here: its shape repositions to close any gap from 0 to 8 inches. So if your gap changes when the mattress shifts, you do not have to force your bed to match the pillow. At 76 inches long and 5 inches thick, it runs the full width of a queen or king mattress with room to spare.
Underneath is a non-slip bottom — a grippy base that holds the wedge against the mattress instead of letting it creep — plus a memory foam core (foam that springs back to shape) that keeps its loft. The polyester cover zips off, so you can machine-wash it when it needs freshening. A side pocket holds a phone, reading glasses, or a remote, so your bedside clutter has somewhere to live other than under the bed.
The one gap to plan around: on a deep frame with nothing underneath, the wedge only fills the top of the space and can slip toward the floor. Buyers report “It only fill up the space of the top mattress… I jammed a body pillow down there first and then put the filler on top.” If your gap is genuinely deep, wedge a pillow below it first. For everything up to eight inches, this is the most forgiving fit on the list. skip it if you want a single rigid piece with nothing to stack underneath.
Where it earns its keep
- Repositionable shape closes any gap from 0 to 8 inches, so it fits most frames
- Non-slip bottom keeps it planted against the mattress
- Side pocket stores a phone, glasses, or remote within reach
- Removable zippered cover washes clean in the machine
What to plan around
- On very deep gaps it only fills the top unless you stack something below it
- The one color on offer, gray, is the only finish you can choose
Lock it in: Your best bet if your mattress-to-headboard gap runs deep and you want a wedge that reshapes to match. It also serves as a reading backrest when you sit up in bed.
2. HABUTWAY Full Size Bed Wedge Pillow for Headboard, Bed Gap Filler(0-8″)
The full-size wedge with clever charging pockets for kids’ rooms and smaller beds
A 54-inch length is what puts the HABUTWAY on this list. On a full-size bed or in a kid’s room, that shorter span closes gaps from 0 to 8 inches at 6 inches thick. Compare it to the MEGCXIT king wedge, which stretches to 76 inches: on a full bed the HABUTWAY’s 54 inches fits without hanging off the ends.
The memory foam fill lands at medium firmness, so the wedge is soft enough to lean against but firm enough to hold its line. The standout detail is the pair of side pockets, each with a small hole to thread a charging cable through — so your phone charges from inside the pocket instead of dangling on the floor. The cover comes off for machine washing.
Two things to know going in. The foam arrives compressed and needs 48 to 72 hours to fully inflate and air out, so give it a couple of days before judging the size. And it ships without a pillowcase of its own — owners mention “Only problem is it doesn’t come with a pillowcase and I’m not quite sure how to find one.” If a coordinated cover matters to you, budget for one separately.
Why it wins people over: the charging pockets turn the wedge into a bedside charging station, so your phone never hits the floor overnight. It is also versatile enough to run down the side of a child’s bed as a bumper.
One honest note: give it a full three days to expand before you decide whether the size is right — new foam looks smaller than it ends up.
Reach for this if: you sleep on a full or twin bed and want built-in charging storage next to the pillow. Families with kids’ beds get double duty as a gap bumper. A king-length piece or a covered pillow from the start is where this one stops.
3. MEGCXIT King Bed Wedge Pillow for Headboard, 76″×10″×6″, White
A full king-width wedge with a curved foam shape that lifts as it fills
The MEGCXIT covers a king edge to edge with 76 inches of length, and its 6 inches of depth closes a taller gap in one piece than the 5-inch FeelAtHome. So on a king frame you get full width coverage without piecing two fillers together. The 100 percent polyester cover is breathable, and the foam core is polyurethane.
What sets this one apart is its curved profile. Rather than a flat triangle, the shape cups upward to give a pillow a little extra lift — so it doubles as head support for sitting up to read or watch TV. The anti-slip bottom keeps it anchored, and spacious side pockets hold a phone, remote, or glasses. The cover unzips and washes.
The soft firmness is the trade-off to weigh. If you want firm back support, the firmer Teemour below holds its angle better. Buyers also note the wedge does not reach the very edges of every frame — one solution is to center it and even out both sides. It runs 24-48 hours to recover its full loft after shipping.
The shape does double duty: the curved surface lifts a pillow slightly, which buyers appreciate for propping up to read or scroll without adding a second pillow.
Sized for a king: at 76 inches it spans a king mattress, but on a narrower bed you may center it rather than run it wall to wall.
Settle here if: you own a king bed and want a long wedge with a gentle lift for sitting up, plus pockets for the bedside essentials. Rigid, firm back support is the one thing it does not do.
4. EUHAMS Queen Bed Wedge Pillow for Headboard, Mattress Gap Filler 0-7 Inches
A firm queen wedge with a dip that cradles your pillow instead of shoving it up
The EUHAMS closes gaps from 0 to 7 inches across 60 inches of queen-width bed, and it does it with a firm hand. Its 30D high-density sponge — a denser foam that resists squashing — keeps the shape from collapsing under your pillow night after night. Firmness here is rated firm, not soft, so it holds its line.
The design twist is a concave surface: instead of a flat slope, it dips in the middle to scoop your pillow and keep it from sliding off. Divided side pockets give each side two compartments for a phone, glasses, or remote, so nothing rolls into the void. The cover is polyester and wipes or washes clean.
Two realities to plan for. The wedge ships vacuum-packed and needs 24 to 72 hours to fully expand — the maker suggests patting or kneading it, and a light steam if it lags. And it relies on the mattress staying pressed up against it; if the mattress drifts, the wedge can tip into the gap. Keep the mattress snug against the headboard and this one stays put.
The case for it
- Firm 30D foam resists collapsing and keeps its shape
- Concave surface cradles the pillow so it stops sliding
- Four compartments — two per side — for phone, glasses, and remote
- Latex-free note aside, the cover washes and the material is breathable
Honest catches
- Needs two to three days to fully expand out of the vacuum pack
- Performs best when the mattress is kept tight against the headboard
A clean fit for: queen-bed sleepers who want a firm wedge that cradles a pillow, plus organized storage on both sides. If you need a soft, sink-in pillow feel, or you cannot wait days for foam to recover, this one will frustrate you.
5. HOMBYS Foldable Wedge Pillow Headboard for Bed Gap, Queen Size
A foldable foam wedge you can bend from triangle into a flat rectangle
The HOMBYS folds, which makes one filler do the job of two shapes. Stand it as a triangle against a headboard, or flatten it into a rectangle to fill a gap up to 7 inches wide. So it angles for a headboard and squares off for a bare wall, both from the same 60-inch, 6-inch-thick queen-size piece.
The build uses 25d high-density memory foam, chosen to resist the compression that flattens cheaper fillers over time. The cover is machine washable with a zipper, and the fabric is odorless, soft, and breathable. Because it folds, it also works as a headboard cushion for leaning back.
Two caveats come up again and again. First, some owners note it runs smaller than the 60 inches advertised — measure your actual gap so the fold reaches the bottom. Second, stability is the recurring gripe: in a deep frame the wedge can slip down rather than staying wedged. It expands over 48 hours after shipping. Fit it snug against the mattress and it behaves.
The folding trick: being able to flip from triangle to rectangle makes it adaptable to both a headboard and a bare wall, and it doubles as a cushioned backrest.
What to watch: in a very deep gap it can slip downward, so seat it tight against the mattress.
Go for it if: you want one filler that runs as a triangle against a headboard or folds flat for a wall gap, and you like a soft, plush finish. A very deep opening is the case that will disappoint you.
6. King Bed Wedge Pillow for Headboard Gap, Bed Gap Filler, L 72″
A tall king wedge with big pockets for the essentials that vanish overnight
Two oversized side pockets are what lift the Voctriam above the pack for storage. Sized for a king bed at 76 inches long, it closes gaps from 0 to 8 inches with a high-density foam core wrapped in breathable 100 percent polyester. It arrives compressed and expands over 24 to 48 hours, so it looks slight in the box and plumps to full size on the bed.
The pair of large-capacity pockets — one on each side — are big enough for a phone, a mini iPad, a remote, or glasses. That keeps your bedside odds and ends tidy instead of scattered on the floor. The jade-white cover is machine washable.
Where it may need attention is stay-put behavior. Owners are split on stability — some say it grips the mattress and holds, others find it shifts. Buyers also note it arrives larger than expected, so check your frame width. Firmness is soft, which suits propping up to read or watch TV more than rigid back support.
Big storage, big length: the two oversized pockets make this a strong pick if you like having your phone and remote within arm’s reach, and 76 inches covers a king.
The catch: it can be more wedge than some frames need, and staying put depends on a tight mattress fit.
Made for: king-bed owners who want full-length coverage and generous storage pockets beside the pillow. On a smaller frame, or if you want a firmer grip, this is not the one.
7. Teemour Patented Bed Wedge Pillow for Headboard Gap (0-7″), King 76″x10″x6″
The wedge built to stay put, with a gripping base and a shape that holds for months
Gripping dots on the base are what win the Teemour its spot — a textured non-slip layer that stays planted on the mattress instead of creeping, the problem that sends most old fillers back. It spans 76 inches across a king bed and closes gaps from 0 to 7 inches, matching the deeper wedges thickness for thickness at 6 inches.
The fill is premium high-density foam, firm enough to block the gap and recover its shape rather than sagging. The zippered cover is made from a breathable fabric and carries an Oeko-tex certification, which is a textile safety standard for the fabric — remove and machine-wash it as needed. The medium-soft-and-firm rating walks the middle line between plush and rigid.
Set expectations on expansion: it ships compressed and takes 24 to 48 hours to reach full loft, so the day-one size is not the final size. It also comes in one color option, which is worth knowing if you want a specific look. The maker backs it with a 30-day return/replacement service alongside a one-year warranty. Customers note it still holds firmness and shape after six months of use.
What earns it the spot
- Gripping-dot base resists sliding better than a smooth bottom
- High-density foam keeps its firmness and shape for months
- Oeko-tex certified cover zips off and machine-washes
- Backed by a one-year warranty and a 30-day replacement service
Worth knowing first
- Needs a full day or two to recover its loft after shipping
- Comes in a single color if you want to match your bedding
Best for: anyone whose top priority is a wedge that grips and keeps its shape long-term, on a king frame. Want a color choice, or need it usable the same day? Look past this one.
8. Kolbs Bed Wedge Pillow for Headboard, Queen 60″
A low, tidy wedge that fills the gap without crowding your pillow
At 6 inches tall, the Kolbs plugs the hole without lifting your pillow — the quiet fix for people who do not want a backrest. It sits at a queen length of 60 inches by 10 inches wide by 6 inches tall, low enough to slot behind the pillow without pushing it up.
Each side pocket has an access hole to thread a charging cable, so your phone can sit in the pocket and charge at once — a small detail that keeps a cable off the floor. The cover is removable and machine washable, and the foam fill is rated soft.
The low profile is also the honest limitation. A few sleepers who tried using it as a headrest found it took adjustment. In a deep void this thin, soft filler will not bridge the gap. Used as intended — a gap filler behind the pillow — it does its job cleanly and looks tidy against the headboard.
Its whole appeal is restraint: a slim, soft wedge that plugs the gap without altering how your pillow sits, plus cable-friendly pockets.
The trade-off: at 6 inches tall and soft, it is best for shallow-to-medium gaps, not deep voids.
Pick this if: you want a discreet filler that disappears behind your pillow and offers cable-threaded storage pockets. Need a firm wedge that also props you up to read, or a fix for a deep gap? This is the wrong tool.
9. HIGOGOGO Queen Size Wedge Pillow for Headboard Gap (0-7″), Grey 60″x11″x9″
The oversized wedge that seals the widest gaps of anything on this list
A 9-inch thickness is what makes the HIGOGOGO the deepest pick here — well past the 6-inch thickness most of the others share, and taller than the 6-inch Teemour. Its profile is 60 inches long, 11 inches wide, and 9 inches thick, so it seals gaps from 0 to 7 inches with margin to spare, even where the mattress sits low against the headboard.
The fill is 30D firm high-density foam — a denser grade that stays supportive under daily use — and the cover is a removable, machine-washable corduroy-cotton blend. Dual spacious pockets hold a phone, remote, and glasses. Because it is firmer, it also works as head-and-neck support for sitting up, not just as a hole plug.
The size cuts two ways. Some queen owners find it exactly right; others note it runs larger than expected, and a king sleeper flagged that it hangs off the sides. It ships vacuum-packed and needs 24 to 72 hours to expand — the maker suggests patting or kneading it, and a light steam if it lags. Seat it against the mattress and it holds.
Built for big gaps: at 9 inches thick it towers over the 6-inch fillers, so deep voids stay sealed, and the firm 30D foam doubles as back support.
Size to check: it can overhang a king bed, so confirm your frame before ordering.
Reach for this if: your gap is stubbornly wide and shallow fillers keep failing, and you want firm support plus storage pockets. Measure first if you sleep on a king, since the oversized length can hang past the sides.
Understanding the Specs
Gap height and thickness
The “0-8 inch” or “0-7 inch” figure tells you how tall a gap the wedge can bridge from the mattress to the headboard or wall. Thickness is the vertical depth of the foam — the 9-inch HIGOGOGO bridges deeper voids than the 6-inch fillers, while a 6-inch wedge suits a shallower gap. Measure the gap with the mattress pushed flush to the headboard so you buy a wedge deep enough to reach the bottom; a wedge that only fills the top will drop to the floor.
Foam density and firmness
Density is often listed as a “D” number, like 25D or 30D. Higher numbers mean denser foam that resists squashing and holds its shape longer, which is why the 30D wedges here stay firm while softer fills sink. Firmness — soft, medium, or firm — decides feel: soft foams suit a slim filler behind the pillow, while firm foam also props you up to read. Every foam wedge arrives compressed and needs time to expand, often 24 to 72 hours.
FAQ
How do I measure my bed gap before buying a wedge filler?
Will a wedge gap filler work with an adjustable bed frame?
How long does a foam wedge filler take to expand after shipping?
What is the difference between a 6-inch and a 9-inch wedge filler?
Can I wash the cover on a bed wedge gap filler?
Will a gap filler keep my phone and glasses from falling behind the bed?
Is a wedge gap filler firm enough to use as a backrest?
Do I need a queen or king size wedge gap filler?
Will a gap filler stay in place or slide into the gap overnight?
Are side pockets on a headboard wedge worth having?
Final Thoughts: The Verdict
For most beds, the bed wedge gap filler to beat is the FeelAtHome Queen Bed Gap Filler, because its adjustable shape closes any gap from 0 to 8 inches and the non-slip bottom keeps it planted — the crowd favorite at 4.6 stars and 300+ ratings, and the most forgiving fit here. 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Then measure the open space from the top of the mattress down to the deepest point of the gap, and measure the width across the bed. Match those two numbers to the wedge’s gap range and length. Most fillers on this list close gaps up to 7 or 8 inches, and queen wedges run about 60 inches wide while king wedges reach 76 inches.”}}, {“@type”: “Question”, “name”: “Will a wedge gap filler work with an adjustable bed frame?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “It can, but an adjustable frame that raises and lowers the head will repeatedly open and close the gap and shift the filler. A wedge with a gripping, non-slip bottom holds better in that setup than a smooth one, since the texture resists sliding as the frame moves. If your frame articulates a lot, check that the wedge sits snugly against the mattress so it moves with the bed rather than dropping through.”}}, {“@type”: “Question”, “name”: “How long does a foam wedge filler take to expand after shipping?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “Most foam wedges arrive vacuum-packed and need time to recover their full loft. The HABUTWAY calls for 48 to 72 hours, the EUHAMS and HIGOGOGO ask for 24 to 72 hours, and the Voctriam and Teemour say 24 to 48 hours. Patting or kneading the foam speeds recovery, and a light steam can help if it lags. Judge the size only after it has fully expanded, not the day it arrives.”}}, {“@type”: “Question”, “name”: “What is the difference between a 6-inch and a 9-inch wedge filler?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “The number is the thickness, or vertical depth, of the foam. A 6-inch wedge seals a shallow-to-medium gap and stays low so it does not disturb your pillow, which is the profile most picks here share. A thicker 9-inch wedge like the HIGOGOGO reaches deeper voids and stands taller, so it will not slip down where the gap is wide — but it can also overhang a narrower bed and feels more like a backrest.”}}, {“@type”: “Question”, “name”: “Can I wash the cover on a bed wedge gap filler?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “Yes, on almost every pick here. The covers are removable with a zipper and machine washable — the FeelAtHome, HABUTWAY, MEGCXIT, EUHAMS, HOMBYS, Voctriam, Teemour, Kolbs, and HIGOGOGO all list a washable or removable cover. Wash the cover only, not the foam core, and let it air-dry before zipping it back on. Keeping the cover clean also keeps stains and odors off the foam.”}}, {“@type”: “Question”, “name”: “Will a gap filler keep my phone and glasses from falling behind the bed?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “That is exactly what it is for. A wedge that spans the gap blocks the opening so phones, remotes, glasses, and pillows stay on the mattress. Several picks add side pockets — the MEGCXIT, Voctriam, Teemour, Kolbs, HIGOGOGO, and HABUTWAY — giving your bedside items a home within reach. The HABUTWAY’s pockets even have a hole for threading a charging cable through.”}}, {“@type”: “Question”, “name”: “Is a wedge gap filler firm enough to use as a backrest?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “It depends on the foam. The firmer wedges — the EUHAMS with its 30D sponge and the HIGOGOGO with 30D firm foam — hold their angle and work as back support for reading or watching TV. The softer fills, like the Kolbs and HOMBYS, are better as pure gap fillers that sit behind the pillow without propping you up. For both jobs in one piece, choose a firm, thicker wedge.”}}, {“@type”: “Question”, “name”: “Do I need a queen or king size wedge gap filler?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “Match the wedge length to your mattress width. Queen wedges run about 60 inches, and king wedges stretch to 76 inches to span a wider mattress. A queen wedge on a king bed leaves open gaps at the edges, while a king wedge on a smaller bed can hang off the sides — which buyers have noted about the oversized HIGOGOGO. A filler with a little extra length is easier to live with, since you can center it and even out the overhang.”}}, {“@type”: “Question”, “name”: “Will a gap filler stay in place or slide into the gap overnight?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “That depends on the bottom surface and the fit. Wedges with a non-slip or gripping bottom — the FeelAtHome, MEGCXIT, and Teemour — resist sliding and stay planted better than smooth ones. Fit matters just as much: keep the mattress pressed up against the wedge so it cannot tip. In a very deep gap, a single wedge may only fill the top and slip down unless the gap is bridged all the way to the bottom.”}}, {“@type”: “Question”, “name”: “Are side pockets on a headboard wedge worth having?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “They are a small feature that adds up. Pockets give your phone, remote, glasses, or a book a spot right at the head of the bed, so items stop migrating to the floor or the nightstand. The HABUTWAY and Kolbs go further with a hole to thread a charging cable, so a device can charge from inside the pocket. If tidiness beside the pillow matters to you, a pocketed wedge earns its keep.”}}]}]}
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