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Our free-standing bed extender is easy to fit.
Widening your mattress? Place the extender at the head end for best results. If your headboard gets in the way, simply remove it and mount it to the wall.
Adding length? Fit the extender flush against the wall for stability.
No tools, no fuss—just extra comfort, sorted.
This lightweight foam is a great choice for headboards, crafts, costumes, and a variety of general-purpose projects. It’s easy to work with and perfect for decorative or low impact uses. Just a heads-up: we don’t recommend this grade for seating or any application where it’ll need to support weight regularly.
RX30/110 Lilac Foam SheetA soft, flexible foam ideal for back cushions and headboards. Suitable for soft fixed backs or medium-feel loose back cushions & mattresses .Often chosen when a gentler, more cushioned option is needed. Note: This grade may occasionally be supplied in white, as it is manufactured in both Lilac and White.
RX39/120 Orange Foam CushionsA popular high-density foam with a soft to medium feel. Ideal for achieving a medium comfort level in thicker cushions or a softer feel in thinner ones. Also works well as a top layer over firmer foam to enhance comfort.
Medium density firm foam. Suitable for seating perfect for sofas, dining chairs, boats, caravans, and camper van seating and mattresses. Best choice for cushions 3–4 inches thick. May be too firm for cushions above 5” in thickness
This product is made by laminating RX38 firm blue foam with a 1″ layer of memory foam. It is essential that the total thickness (C) is greater than 1″. If you order this product at exactly 1″ thick, it will consist of memory foam only
This product is made by laminating RX38 firm blue foam with a 2″ layer of memory foam. It is essential that the total thickness (C) is greater than 2″. If you order this product at exactly 2″ thick, it will consist of memory foam only
IMPORTANT GRADE INFORMATION This product combines Reflex 40 medium foam with a 1″ layer of memory foam. If you order at 1″ thick, you’ll receive memory foam only — without the Reflex 40 support layer. To ensure proper comfort and support, the total thickness must be greater than 1″.
IMPORTANT GRADE INFORMATION This product combines Reflex 40 medium foam with a 2″ layer of memory foam. If you order at 2″ thick, you’ll receive memory foam only — without the Reflex 40 support layer. To ensure proper comfort and support, the total thickness must be greater than 2″.
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If your bed feels too short or narrow, you’re not alone. Most standard UK mattresses measure between 190cm and 200cm in length, which simply isn’t long enough for many adults. That’s where our free-standing bed extender comes in — a smart, practical mattress extension designed to increase comfort without replacing your bed.
This versatile bed extension is ideal whether you need extra legroom, more sleeping width, or a flexible solution for changing needs.
A bed extender (also known as a mattress extender, mattress extension, or bed width extender) is a high-density foam extension unit that fits snugly against your existing mattress. It allows you to extend the length or width of your bed, creating a larger sleeping surface instantly.
Unlike permanent bed frame extenders or costly custom mattresses, this solution is fully removable, portable, and works with almost any setup.
Our bed extension for adults is ideal if you want to:
Increase mattress length for taller sleepers
Add width using a bed width extender for more space
Convert a single bed extender to double sleeping width
Improve comfort without changing your bed frame
This makes it perfect for homes, guest rooms, rental properties, campervans, and holiday lets.
Unlike fixed bed extensions, this freestanding unit:
Requires no tools or installation
Works with memory foam, hybrid, or sprung mattresses
Can be repositioned or removed at any time
Is covered in a premium breathable fabric such as TENCEL™
Length extension:Place the mattress extender at the head of the bed and push it firmly against the wall for support. If needed, remove the headboard and remount it directly to the wall behind.
Width extension:Fit the extender flush against the wall to create a wider sleeping area. If required, we can supply a custom cover to fit over both the mattress and extender as a single unit (additional charges apply).
This approach works equally well for:
Single bed extenders
Double bed extenders
Single bed extensions used to increase sleeping space
Suitable for all UK mattress sizes
High-resilience foam for long-term support
Helps reduce foot overhang and improve sleep posture
A simple alternative to permanent bed frame extenders
No screws, no tools — just place and sleep
Tall adults over 6ft
Couples needing extra space
Parents co-sleeping with children
Anyone not ready to replace their bed or mattress
This freestanding mattress extension is one of the most cost-effective and flexible bed extensions available in the UK. Whether you need a single bed extender, a double bed extender, or a simple bed extension for adults, it delivers comfort without the cost or commitment of a new bed.
Old problem. Sensible solution. Job done.
👉 You may also like: our Wedge Shape Foam cut to size — ideal for angled mattress support, gentle elevation and bespoke bed extender builds.
When a flat foam block won’t quite do the job, this tapered foam shape is a smart upgrade for both home mattresses and custom bed extender solutions. Its angled profile creates a smooth, natural transition between your existing mattress and the extender, helping to eliminate uncomfortable step-ups, gaps, or pressure points at the head or foot of the bed.
Precision-cut using our CNC foam cutting process, wedge foam is commonly used on standard beds at home to add subtle elevation or improve comfort, as well as in campervans, caravans, motorhomes and boats, where space and bed layouts often need a more tailored solution. With a choice of foam grades available, you can closely match the feel of your existing mattress, ensuring the extension or support feels like part of the original sleep surface — not an afterthought.
✔️ Suitable for home beds & mattresses✔️ Ideal for bed extenders, elevation & angled support✔️ Made-to-measure for domestic & mobile sleeping spaces✔️ Covers available – call us for pricing✔️ Manufactured in the UK using premium upholstery foam
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