10 Best Gap Filler Bed in The UK

Last updated on 12/08/2025

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Kölbs Bed Wedge Gap Filler | Modern Stylish Wedge Pillow Headboard Pillow | Bed Gap Filler Headboard Wedge Pillow | Chic Jacquard Velvet Pillow Wedge for Headboard Gap Mattress Gap Filler Full Size

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Why We Love It

Fills gaps, prevents falls.
Flippable for quick style.
Premium high-density foam comfort.

Main Highlights

Kӧlbs Bed Wedge Gap Filler | Modern Stylish Wedge Pillow Headboard Pillow | Bed Gap Filler Headboard Wedge Pillow | Chic Jacquard Velvet Pillow Wedge For Headboard Gap Mattress Gap Filler Full Size
BED WEDGE GAP FILLER: Pillow, remote or phone falling between your mattress and headboard? Not anymore! Sleep sound and peacefully, with the Kӧlbs headboard pillow. Available in the following sizes, bed gap filler king, bed gap filler queen, bed gap filler full and bed gap filler twin. The perfect pillow wedge for headboard gap.
CHIC MODERN STYLE: Hey its your bedroom, give it some style. Two tone jacquard velvet adds style and works with all decor. Cover is removable and machine washable. This bed gap filler slots neatly into the gap behind your headboard and instantly transforms your bedroom into a designer space.
WEDGE PILLOW DESIGN MATTRESS GAP FILLER: The unique design not fills the headboard gap preventing items from falling, but also provides support for your head and neck ensuring a comfortable sleep.
CONVENIENT SIDE POCKETS: 2 side pockets designed to store your devices, remote glasses and more. Pockets have access hole to thread your charging wire to your device while in the pocket.
PREMIUM HIGH DENSITY FOAM: The Kӧlbs Wedge Pillow for Headboards is crafted using premium high density foam for years of comfort and support.

Qucover Bed Bridge Twin to King Converter Kit, Gap Filler Kit with Memory Foam, Comfortable Mattress Connector for Guest and Hotel, 200x20x8cm

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Why We Love It

Prevents mattresses from shifting.
Creates a cozy family bed.
Machine washable for easy care.

Main Highlights

🎁 Bed Bridge Twin Bed Converter Kit comes with a leads/bed strap 100 cm long, and 5 cm width. It holds the mattresses in place so that they will not slide or move apart when sleeping.
🎁 Bed Bridge Connector designed in widen and lengthen "T" shaped solid sponge. Length 200cm/78.7 in, Width 20cm/7.87 in, and sandwich sponge part with mattress, 3 steps of grooves prevent the bed from shifting.
🎁 Functions: Using the mattress gap filler to fill in the gap between the two mattresses and surround the beds with the strap to make them tight. Make a family bed in minutes.
🎁 The Twin Bed Connector comes with a knit finish that allows you to sleep comfortably without feeling the gaps in between when combining beds.
🎁 Easy Care instructions, Bed bridge mattress is machine washable in cold water, tumble dry low, do not bleach. 1 Year Quality Warranty.

TokSay (54"x10"x6" Double Size Bed Wedge Pillow for Headboard,Bed Gap Filler Between Mattress and Headboard, Adjustable High-Density Foam Headboard Pillow for Sleeping and Reading

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Why We Love It

Prevents pillows from falling.
Customizable for various gaps.
Convenient pockets for small items.

Main Highlights

Mattress Gap Filler: Are you still annoyed that the pillow falls under the bed because the gap is too big? Choose our sleeping bed wedge pillow for headboard, close the gap between the mattress and headboard/wall, you don't have to look for your pillows everywhere, and you can enjoy your sleep comfortably.
Fitting Perfectly: This reading headboard pillow fits the Queen mattress perfectly, and you can fold it differently to place it elsewhere with different gap widths. Different folding methods are suitable for gaps within 0-8".
Suitable for Different Scenes: The bed gap filler can be use to fill gaps at the head of the bed, or tuck it into the side of your bed and cribs, or put it on the couch. You can also use it as a wedge pillow to elevate the pillow for a more comfortable sleeping position.
Convenient Pocket Design: The wedge pillow headboard gap filler has a pockets for remote controls, phones, glasses or other small items when you're ready to sleep. Double size memory foam wedge pillow for bed has a polyester fabric cover, easily unzips and removes the pillowcase for cleaning.
Always on Line Service Team: Mattress wedge gap filler is made of uncut high-density foam, which has very good resilience. We need to compress them properly for shipping, you don't have to worry about them being out of shape, they will fully recover after 24-48 hours. If you have any questions, you can always contact us for further support.

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。

FOAM CRAFT® High Density Gap Filler Foam for Sofa Bed, Mattress Extender Rectangle Bolster Support Pillow Armrest Cushion Bed Gap Filler for Headboard & Mattress Only Foams (Grey, 150x10x5cm)

Why We Love It

Seamless sleep experience guaranteed.
Versatile for various mattress sizes.
Durable and long-lasting support.

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.

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

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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.

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.

Upholstery Cushion by Rainbow

High Density Fo.am Gap Filler for Headboard, Sofa, Bed, Mattress Extender, Fo.am Pillar, Fo.am Cuboid, Fo.am Sticks, Fo.am Packing, Fo.am Rectangle Bolster, Support Pillow, ( 120 x 10 x 10 CM )

Why We Love It

Seamless sleep experience guaranteed.
Versatile support for any mattress.
Durable for long-lasting comfort.

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.

ANDRESLAD Bed Gap Filler Mattress Gap Crack Filler Wedge Full Mattress Extender Stuffer Furniture Cushion for Sofa Armrest and Bedside

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Why We Love It

Enhances your sleep experience.
Prevents items from falling.
Innovative design for convenience.

Main Highlights

Prevent Items from Falling: Effectively fills the gap between the bed and the wall, keeping your belongings secure and preventing them from falling into hard-to-reach areas.
Easy Installation: Designed for simple and quick setup, allowing you to adjust the filling strips as needed, making cleaning easier and hassle-free.
Comfortable Sleeping Experience: Made from soft cloth material, these filling strips enhance your sleep by providing a comfortable barrier between you and the wall.
Versatile Use: Not only suitable for beds, but also ideal for filling gaps in sofas and chairs, making it a multi-functional addition to your home.
Safe and Reliable: Constructed with materials that ensure safety while using, providing peace of mind for you and your family during sleep.

Bed Gap Filler for Full Mattress, Eadboard Gap Filler King, Mattress Extender Filler for Headboard Gap, Custom Size Bed Gap Filler (Blue, Custom Size)

Why We Love It

Custom sizes for perfect fit.
High-density sponge for comfort.
Breathable fabric for easy cleaning.

Main Highlights

【Custom bed gap filler】- Our Bed Gap Filler for Full Mattress comes in a variety of colors, and the gap filler for bed is available in both universal and custom sizes. Measure length/width/thickness correctly. If you have any questions about custom headboard gap filler king size, please contact us.
【mattress gap filler queen】bed gap filler is specially designed for mattress gap filler between mattress and headboard, mattress extender, wall edge or between two mattresses. A "wide mattress" with our bed gap filler headboard allows you to enjoy a more restful sleep and make your home more comfortable.
【45D sponge gap filler for bed】 The headboard gap filler king is lined with high-density 45D sponge, which has high resilience and will not collapse. You can enjoy comfort and freedom when lying down. Warm reminder: Due to the nature of the bed gap filler headboard sponge, compression packaging is required. After opening the package, mattress gap filler takes 48-72 hours to fully expand.
【High Quality Material】The appearance of mattress gap filler queen is made of breathable linen fabric, soft and skin-friendly. The bed gap filler twin features durable zippers that are removable and easy to clean, keeping your bed tidy. (Washing Tips: Tumble dry on low heat or air dry bed gap filler wall side.)
【Multi-Function】Bed Gap Filler for Full Mattress between any wall and mattress, as a cushion for the side of the bed, as an under-bed capper for pets, gap filler for bed dormitory headboard.

8.7

Excellent

We scanned 1959 products

We reviewed these offers relevant to the Gap Filler Bed 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 Kölbs, Qucover, TokSay, baibu, FOAM CRAFT, VEVOR, Monbaer, Upholstery Cushion by Rainbow, ANDRESLAD, GLikur, 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 in the market, we considered we took a deep dive into 9796 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 Kölbs Bed Wedge Gap Filler | Modern Stylish Wedge Pillow Headboard Pillow | Bed Gap Filler Headboard Wedge Pillow | Chic Jacquard Velvet Pillow Wedge for Headboard Gap Mattress Gap Filler Full Size. We love many things about this product by Kölbs. What sets it apart from the competition is Fills gaps, prevents falls, Flippable for quick style, Premium high-density foam comfort.
The best value product for most shoppers and where user satisfaction is continuously the highest is Qucover Bed Bridge Twin to King Converter Kit, Gap Filler Kit with Memory Foam, Comfortable Mattress Connector for Guest and Hotel, 200x20x8cm by Qucover based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Gap Filler Bed 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 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 in The UK

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We scanned 1959 products

We concluded that: