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This lightweight foam is best suited for occasional-use only, We wouldn’t recommend it for everyday use or situations where long-term support is essential. Keep in mind—thicker, higher-volume mattresses naturally offer more support than thinner ones, regardless of the foam grade.
This medium-density, firm mattress foam Ideal for mattresses around 3–4 inches thick, offering reliable support and durability. Just a heads-up—it may feel a bit too firm for those who prefer a softer sleeping surface. Keep in mind—thicker, higher-volume mattresses naturally offer more support than thinner ones, regardless of the foam grade.
Medium-density foam ideal for mattresses 4″ and above. It provides balanced support and comfort, making it a great choice for those seeking a medium-firm sleeping surface. Keep in mind—thicker mattresses offer more support than thinner ones, regardless of foam grade.
Most popular High density firm foam mattresses. Best choice for cushions 3–4 inches thick. May be too firm for cushions above 5” in thickness. Keep in mind—thicker mattresses offer more support than thinner ones, regardless of foam grade.
High density, medium firm foam Reflex 40h is a high-quality foam known for lasting comfort and support. It bounces back quickly and keeps its shape for years—perfect for mattress. Keep in mind—thicker mattresses offer more support than thinner ones, regardless of foam grade.
Incorporating Visco Elastic memory foam into your bedding solutions offers enhanced comfort and support, catering to various applications from home to travel.
GelFlex memory foam is a modern, gel-infused foam designed for mattress toppers where cooler sleep matters.It provides pressure-relieving comfort with a more responsive feel than traditional memory foam.The gel infusion helps reduce heat build-up, making it ideal for warmer sleepers.Perfect for upgrading comfort without creating an overly soft or sink-in feel.
Firm V38 base foam bonded to 1″ of Vasco 50 memory foam softens the feel, of the mattress, making what would typically be a firm mattress more comfortable. Keep in mind—thicker, higher-volume mattresses naturally offer more support than thinner ones, regardless of the foam grade.
Firm V38 base foam bonded to 2″ of Vasco 50 memory foam softens the feel, of the mattress, making what would typically be a firm mattress more comfortable. Keep in mind—thicker, higher-volume mattresses naturally offer more support than thinner ones, regardless of the foam grade.
Comfort memory foam mattress combo featuring a supportive Reflex 40 grey base topped with 1″ (2.5cm) of plush memory foam for added pressure relief and comfort.
Comfort Plus Mattress Combo features a supportive Reflex 40 grey foam base topped with 2″ (5cm) of pressure-relieving memory foam.Offers the perfect balance of firm support and plush comfort for a restful night’s sleep. Ideal for everyday use, guest beds, or custom spaces like campervans and caravans.
High density firm foam RG50 is a high-density, firm foam ideal for heavy-duty support. It’s commonly used in seat cushions, gym mats, and other applications where durability and strong support are key. This is the perfect foam for thin Pop-top or Roof-Tent mattresses.
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Standard mattresses are built to standard sizes. Real homes, campervans, boats and DIY projects rarely are. The solution Design Your Own Mattress.
If you’re dealing with an awkward space, unusual dimensions, or simply want better control over comfort, a DIY mattress or custom size mattress gives you a made-to-measure solution without compromise.
With Foam4U, you design the mattress. We cut it precisely to your measurements — accurately, reliably, and made in the UK.
A custom mattress puts you back in control.
Instead of choosing the “closest size available”, you specify the exact dimensions you need. Whether it’s a mattress custom size for a campervan, a boat bunk, a loft bed or a built-in frame, this system lets you create a mattress that fits perfectly — first time.
No trimming. No gaps. No wasted space.
A custom made mattress is built specifically for your space and comfort requirements, rather than factory-set dimensions.
You choose:
📏 Exact length, width and depth
🪵 Your preferred level of support
🛠️ A build suited to how and where the mattress will be used
The result is a custom size mattress that fits properly and performs exactly as it should.
A DIY mattress is ideal for:
🚐 Campervans and motorhomes
🚤 Boats and narrow cabins
🏡 Built-in beds and alcoves
🪑 Daybeds and DIY furniture projects
If a standard mattress doesn’t fit — this will.
With a custom mattress, comfort isn’t guesswork. Choose:
Firm, medium or softer support
Memory foam, reflex foam or layered builds
Depths to suit slatted bases, platforms or solid boards
You get the comfort you want — not whatever happens to be on the shelf.
A DIY mattress doesn’t mean DIY quality.
By going custom, you avoid paying for branding, retail mark-ups and unnecessary features. Instead, you’re paying for high-quality foam, accurate cutting and UK-based manufacturing — the things that actually matter.
Our custom mattresses are commonly made for:
Campervans, caravans and motorhomes
Boats and marine sleeping areas
Home renovation and built-in furniture projects
Replacement mattresses for older or unusual bed frames
If you can measure it, we can make it.
Customers designing a custom mattress often choose these products to complete their setup or fine-tune comfort:
Ideal for adjusting comfort after purchase. A popular add-on if you want extra pressure relief or the flexibility to fine-tune firmness — especially useful for campervans, boats and bespoke beds.
Complete your sleep setup with supportive memory foam pillows and cushions designed to improve posture, comfort and overall sleep quality.
Protect your custom mattress from spills, dust and everyday wear. A simple addition that helps extend mattress life and keep things hygienic.
Perfect if your bed feels a little short. A bed extender works seamlessly alongside a custom mattress — ideal for taller sleepers and campervan or boat layouts.
👉 All prices include VAT.
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