10 Best Gap Filler Bed Cushion in The UK

Last updated on 12/08/2025

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Full/Queen/King Size Bed Wedge Pillow Gap Filler Foam Cushion for Mattress Headboard With Side Pocket Ergonomic Bolster Pillow Ideal For Back Pain Relief Improved Sleep Quality (Grey,39''×6''×6'')

Why We Love It

Maintains shape with prolonged use.
Features a side storage pocket.
Closes gap between mattress.

Main Highlights

😀【Durable Gap Solution】Featuring 25D sponge, this bed wedge pillow offers excellent elasticity, maintaining its shape even with prolonged use. It fills gaps up to 18cm (7"), effectively keeping pillows, toys, and remotes from falling through.
😉【Handy Storage Addition】In addition to avoid slipping off, the long gap filler pillow is also a storage addition. The situation of not being able to find your smart pone will no longer happen, since the bed wedge pillow features a side storage pocket to keep commonly used items within reach, such as remote controls and eyeglasses.
😊【Close The Gap】This mattress gap filler close the gap between your headboard or wall and mattress or foot board, so you you won't lose your pillows, pets and children's toys. This kind of bed gap filler is a good helper for home storage.
😎【Multifunctional Pillow】 Ideal for filling the gap between your mattress and headboard, this full/queen size pillow can also be used against walls to avoid bumps. It provides ergonomic support on sofas or tatamis, ensuring a comfortable posture for reading or watching TV.
😄【Comfortable and Ergonomic】: The triangle bolster pillow has an arched design that aligns with your neck's natural curve, alleviating pressure. Its zippered polyester cover is both skin-friendly and removable, making it easy to wash by hand or in a machine.

YWQJL Headboard Pillow Wedge Single Double Bed 200cm King Size Double Gap Filler Cover Bed Backrest Triangle Pillow For Back Of Bed Headboard Cushion,B-60x20x50cm

Why We Love It

Soft and skin-friendly texture.
Ergonomically supports your back.
Convenient side pocket included.

Main Highlights

【Headboard Pillow Wedge】: The triangular cushion is made of fleece fabric with a fine and soft feel. The headboard pillow is skin-friendly, breathable and comfortable. The filling ensures the elasticity and comfort of the backrest, which can be used for a long time. has great resilience.
【Ergonomic Reading Pillow】: This large bolster wedge pillow is ergonomically designed to support the natural curvature of the back and provide optimal elevation for the upper body. It can reduce stress on your back and shoulders and provide proper support while you read and rest.
【Zipper Side Pocket】: The bottom of the pillow is wider, the pillow side pocket details for your phone/remote/glasses so you don't lose it and it's easily accessible. The wedge pillows feature a convenient zipper and detachable buttons, the pillowcase is attached to the pillow with buttons and is easy to remove with a zipper.
【Headboard Alternative】: The oversized triangle pillow fills the gap between the wall and the mattress, serves as a backrest for comfort and a sturdy headboard; converts daybed to sofa or twin beds to sofa bed; protects children as a pillow; caravan headboard. The bed back fits any standard bed.
【Multifunctional Cushion】: Allows maximum back support for upright activities such as working on a laptop, watching TV, playing games or reading in bed. You can also lay the wedge pillow at a different angle and lie on it while reading a book or using your cell phone.

High Density Foam Gap Filler for Sofa Bed, Mattress Extender, Rectangle Bolster Support Pillow Armrest Cushion Bed Gap Filler for Headboard & Mattress Only Foam (Grey, 120x10x10cm)

Why We Love It

Seamless sleep for couples.
Versatile for various mattress sizes.
Durable for long-lasting use.

Main Highlights

✔️ Foam Craft Seamless Sleep Solution: Our bed gap filler effortlessly bridges the annoying space between mattresses, ensuring a seamless and uninterrupted sleep experience for couples or anyone with a split mattress setup.
✔️ Upholstery Foam Sheet Wide Application: This sofa arm support pillow is designed to provide outstanding comfort and support as well as a convenience. It can not only act as arm/head support for a wooden sofa, but also close the gap between your headboard or wall and bed mattress.
✔️ Fashionfy Innovative Foam Technology: Experience ultimate comfort with our headboard cushion crafted from high-quality foam sheet. It conforms to your body, eliminating gaps and creating a unified sleeping surface for optimal rest.
✔️ Musa Musa Universal Fit: Designed to accommodate various mattress sizes, our gap filler is adjustable and versatile, offering a universal solution for gaps of any width, providing a snug fit for every bed.
✔️ Durable and Long-Lasting: Built to withstand nightly use, our bed gap filler boasts durability and longevity. Invest in a product that stands the test of time, providing consistent support and comfort for years to come.

COSTWAY Full/Queen Size Bed Wedge Pillow with Side Pocket, 4FT6/5FT Headboard Pillow Long Gap Filler Bed Foam Cushion, Bolster Pillow Cover Gap Between Mattress and Headboard (White, Full-54"x10"x6")

15% Off

Why We Love It

Resilient and gap-filling design.
Ergonomic with handy storage.
Requires no assembly.

Main Highlights

【Resilient to Fill The Gap】Thanks to 25D sponge, the bed wedge pillow has superior elasticity. The headboard pillow not easily deformed for the long-term use. Besides, the gap filler bed pillow can flexibly and tightly adapt to the gap, with a maximum length of 18cm(7”), to prevent pillows, toys and remote controls from accidentally slipping off.
【Ergonomic Arched Design】A side of the triangle bolster pillow is purposely designed to be arching, intending to match the curve of your neck and reduce the physical pressure. More, the exterior cover, made of skin-friendly polyester, is zippered and can be removable for quick hand washing as well as machine washing.
【Handy Storage Addition】In addition to avoid slipping off, the long gap filler pillow is also a storage addition. The situation of not being able to find your smart pone will no longer happen, since the bed wedge pillow features a side storage pocket to keep commonly used items within reach, such as remote controls and eyeglasses.
【Meet Your Diverse Needs】Undoubtedly, the full/queen size bolster pillow perfectly fills the gap between your mattress and headboard, while it can be placed against the wall to eliminate painful collisions. On the sofa or tatami, the headboard reading pillow offers ergonomic supports for you to gain the most comfortable posture for reading or watching TV.
【No Need for Assembly】For the easy delivery, the full/queen size bed gap filler will be rolled up into a compact size. After unboxing the package, it requires no extra installation, but you need to wait for about 72 hours until the foam mattress wedge pillow expands to its fluffiest state.

baibu Full Size Bed Wedge Mattress Wedge Pillow Gap Filler, Headboard Pillow to Fill The Gap Between Your Headboard and Mattress (135 x 25 x 15 cm)

15% OffFree Shipping

Why We Love It

Suitable for mattress gaps.
Multiple usage options available.
Includes a bonus pocket.

Main Highlights

Suitable Size For Most Bed：approx.54x10x6inches (152x25x15cm) , the bed wedge mattress gap fillers are suitable for filling the gap between the headboard/foot board/bed rail/wall and the mattress to protect your pillow from falling.
Multiple Usage ：This headboard pillow can be full used to provide you with better shopping experience, it's not only a bed wedge mattress gap filler to keep items away from falling under the bed, it is also comfortable headboard pad/ cushion on the bed/ under bed blocker for pets.
Bonus Side Pocket ：This mattress wedge pillow includes a durable side pocket for placing the remote control, telephone and storing small items you want to carry with you.
Machine Washable： We designed a long zipper for the triangular bed wedge pillow, just open the zipper to take out the sponge and put the bed wedge cover that needs to be clean in the washing machine. Machine wash with laundry bag and cold, do not bleach, do not iron, just tumble dry with no heat and your mattress gap filler will look as good as new.
High Quality：Our bed wedge mattress fillers are made of high-quality sponge, which can provide enough support to make you sleep more comfortable. You don't have to worry about the quality of the headboard wedge, the wedge pillow cover made with a skin-frendly, breathable fabric, have no peculiar smell, soft and silky, no pilling on the surface, precise sewing and reliable quality. Please buy with confidence。

Multigot Bed Wedge Pillow, Queen/Full Size Headboard Pillow with Side Pocket, Triangle Back Cushion Between Your Mattress & Headboard (137 x 25 x 14 cm)

Why We Love It

Fills gaps seamlessly.
Offers ergonomic comfort.
Includes convenient pocket.

Main Highlights

Perfect Bed Seam Filler: This bed wedge pillow is a great helper for filling gaps within 18cm between the mattress and headboard, sofa, walls, etc. Therefore, you no longer need to worry about losing pillows, toys, remote controls, and other items.
Ergonomic Arch Design: This headboard pillow adopts an ergonomic arched design, providing maximum comfort and strongest support. Besides, wedge-shaped pillow can reduce pressure on the head, neck by perfectly fitting the curves of your upper body.
Convenient Side Pocket: This bed seam filler comes with a side pocket that can store small items such as smartphones and glasses for easy access. Moreover, you can adjust the bed gap filler to a suitable angle to read books, watch TV, or play games.
High Density Foam: Filled with high-density and excellent resilient foam, this triangle back cushion can be used for a long time without deformation and collapse. Please note that due to the vacuum packaging, the pillow takes approximately 72 hours to fully inflate.
Comfortable & Removable Cover: Thanks to high-quality polyester fabric, the pillowcase is soft, breathable, non pilling, and feels very delicate and comfortable. In addition, the smooth zipper allows you to easily remove the lid for machine washing.

VEVOR Bed Wedge Pillow for Headboard, King Size, 72"x10"x6" Bed Gap Filler, Fill 0-7" Gap Between Headboard and Mattress, 25D Foam Mattress Wedge Headboard Pillow with Side Pocket, for Backrest, Gray

Free Shipping

Why We Love It

Fills gaps and keeps tidy.
High-density foam provides comfort.
Anti-slip design ensures stability.

Main Highlights

Multi-Function Gap Filling: This bed gap filler is especially designed to fill gaps of 0-7 inches between the headboard and mattress, preventing items and pillows from sliding off, keeping your bed tidy and organized.
High-Quality 25D Foam: Made with soft, elastic 25D high-density foam, providing comfortable support for your head and neck. Its rebound ensures the headboard pillow keeps its shape after repeated use. Note: Let it rest for 48 hours to fully restore shape after unpacking.
Versatile Use: This multifunctional bed gap pillow is ideal for filling bed gaps, adjusting sleep height, or offering back and leg support. It meets your diverse needs, ensuring comfort and convenience for sleep and daily activities.
Anti-Slip Design: Featuring plastic-coated bottom that fits tightly with the mattress, this mattress gap filler prevents sliding during sleep. It provides stable head and neck support, ensuring comfort whether side-sleeping or lying on your back.
Zip-Off Pillowcase: Made with durable, wrinkle-resistant polyester fabric, featuring a smooth zipper for hassle-free cleaning and replacement. It is non-pilling and can withstand multiple machine washes, maintaining good condition.

MEIRRAI Car Mattress, Inflatable Car Bed for Back of Cars, Gap Filler Air Mattress, Rear Seat Widening for SUV/MVP/Saloons, Travel Inflatable Gap Pad, Camping Bed with Air Pump for Travel Camping

Free Shipping

Why We Love It

Transforms car travel comfort.
Quick inflation for convenience.
Perfect for long journeys.

Main Highlights

Flocking Gap Filler Mattress: Our car gap pads are made of high-quality PVC materials, and pressure-resistant, have a bed to sleep peacefully and superior flocking material, transforms your car back seat into a travel bed, which is extremely soft and comfortable, easy to clean
Practical Solution: If you sleep in the back seat during long journeys, inflate it to fill the gap between the rear and front row, you will not worry about the rolling problem (especially for children). The rear seat gaps of the car air mattress are a great way to make your car more comfortable on long journeys
Car Mattress Back Bench: Mattress car back seat only 0.8 kg weight, can be folded, easy to carry. This package contains 1 air cushion, 1 air pump, 1 storage bag and 2 PVC repair patches (you can easily attach it with PVC glue (not included) if you do not cut the pad carefully
Quick Inflation and Easy to Store: Car bed with cigarette lighter charger, the pad can be inflated in seconds, no more than 1 minute. Perfect for long trips and short naps on the go. Gap pad size: 130 cm (L) x 27 cm (W) x 37 cm (H) / 51.1 inches x 10.6 inches x 14.6 inches (after inflation)
Wide Range of Uses: Perfect for long distance travel, camping, adventure and more. Fits most cars, including sedans, SUVs and minivans. Great gift for Thanksgiving, Christmas, special holidays for women and men

Upholstery Cushion by Rainbow

Upholstery Cushion by Rainbow Blue High Density Gap Filler for Headboard, Sofa, Bed, Mattress Extender, Rectangle Bolster, Support Pillow, Gap Filler for Headboard (140x10x10 CM)

Why We Love It

Seamless sleep experience guaranteed.
Outstanding comfort and support.
Durable and long-lasting solution.

Main Highlights

Upholstery Foam Seamless Sleep Solution: Our bed gap filler effortlessly bridges the annoying space between mattresses, ensuring a seamless and uninterrupted sleep experience for couples or anyone with a split mattress setup.
Upholstery Foam Sheet Wide Application: This sofa arm support pillow is designed to provide outstanding comfort and support as well as a convenience. It can not only act as arm/head support for a wooden sofa, but also close the gap between your headboard or wall and bed mattress.
Fashionfy Innovative Foam Technology: Experience ultimate comfort with our headboard cushion crafted from high-quality foam sheet. It conforms to your body, eliminating gaps and creating a unified sleeping surface for optimal rest.
Universal Fit: Designed to accommodate various mattress sizes, our gap filler is adjustable and versatile, offering a universal solution for gaps of any width, providing a snug fit for every bed.
Durable and Long-Lasting: Built to withstand nightly use, our bed gap filler boasts durability and longevity. Invest in a product that stands the test of time, providing consistent support and comfort for years to come.

Custom Size Long Bed Gap Filler, Close the Gap Between Headboard Wall or Foot Board for Single/Double/King Bed, Rectangle Mattress Support Bolster Thick Armrest Pillow

Why We Love It

Superior elasticity offers lasting use.
Adaptable, multi-functional design.
Custom size for perfect fit.

Main Highlights

Bed Gap Filler - Thanks to high density sponge, the bed pillow has superior elasticity. The headboard pillow not easily deformed for the long-term use. Besides, the gap filler bed pillow can flexibly and tightly adapt to the gap.
Multi-function - The full/queen size bolster pillow perfectly fills the gap between your mattress and headboard, while it can be placed against the wall to eliminate painful collisions. On the sofa or tatami, the headboard reading pillow offers ergonomic supports for you to gain the most comfortable posture for reading or watching TV.
Custom Size - Click the ''Customize now'' button,all dimension filler you can custom,perfect fit your bed/mattress gap.
Removable Cover - Linen cover is wear-resisting and breathable, design with zipper,allows you to easily remove the filler cover for change and wash, hand wash or machine wash is possible.
Comfortable - We offer 3cm,5cm,8cm,10cm,15cm,20cm thickness foam filler cushion,provide outstanding comfort and support as well as a convenience. It can not only close the gap between your headboard or wall and mattress,but also act as arm/head support for a wooden sofa.

8.8

Excellent

We scanned 470 products

We reviewed these offers relevant to the Gap Filler Bed Cushion within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like TJQQ, YWQJL, FOAM CRAFT, COSTWAY, baibu, Multigot, VEVOR, MEIRRAI, Upholstery Cushion by Rainbow, Monbaer, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Gap Filler Bed Cushion in the market, we considered we took a deep dive into 2351 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Full/Queen/King Size Bed Wedge Pillow Gap Filler Foam Cushion for Mattress Headboard With Side Pocket Ergonomic Bolster Pillow Ideal For Back Pain Relief Improved Sleep Quality (Grey,39''×6''×6''). We love many things about this product by TJQQ. What sets it apart from the competition is Maintains shape with prolonged use, Features a side storage pocket, Closes gap between mattress.
The best value product for most shoppers and where user satisfaction is continuously the highest is YWQJL Headboard Pillow Wedge Single Double Bed 200cm King Size Double Gap Filler Cover Bed Backrest Triangle Pillow For Back Of Bed Headboard Cushion,B-60x20x50cm by YWQJL based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Gap Filler Bed Cushion and the best cost-to-value ratio is baibu Full Size Bed Wedge Mattress Wedge Pillow Gap Filler, Headboard Pillow to Fill The Gap Between Your Headboard and Mattress (135 x 25 x 15 cm)at baibu with a 15% discount.
Our list of the best Gap Filler Bed Cushion is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Gap Filler Bed Cushion in The UK

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We scanned 470 products

We concluded that: