Please check the lead time for all options chosen.
Use this option to create a cover to the sizes entered above
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.
High-quality UK-made, heat-sensitive foam that softens and moulds to your body, offering pressure-relieving comfort. Commonly used in mattresses, toppers, pillows, wheelchair cushions, and medical products.
Most popular High 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
50/50 RX39 Firm Foam & Memory Foam Combo A perfect blend of comfort and support — RX39 firm foam provides a solid base, while memory foam contours to the body for pressure relief. Ideal for dog beds, wheelchair seats, and pressure cushions where durability and comfort matter most.
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
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 sofa cushions, armchairs, or even as a mattress.
Medium density, medium firm foam offers instant recovery after use and consistent shape retention over many years. Excellent for deep fill armchair cushions, sofa cushions, or as a mattress of 5” thickness or above
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″.
A durable, open-cell foam that resists water, humidity, and chemicals — ideal for outdoor seating and air/water filtration. Its breathable structure also makes it great for humidifiers, ventilation, and industrial filtration systems.
FROM £60.00
Smart Sleep Solutions for Storage-Savvy Boat Cabins
Need to access storage under your berth without lifting the whole mattress? We’ve got you covered. Our Horizontally Split V-berth mattresses are made in two perfectly matched sections, cut across the width of the mattress — ideal for boat cabins where flexibility matters.
Built for yachts, narrowboats, canal cruisers, and more, this design gives you full-size comfort with easier day-to-day access. No wrestling with a bulky one-piece. No awkward folding. Just a clean, smart solution that works.
Each mattress is handcrafted here in the UK and shaped to suit your berth layout — including curved bows, angled sides, and unusual proportions. You can supply measurements or send us a template if the shape’s a bit more complicated.
Choose between:
High-density foam – firm, supportive, long-lasting
Memory foam – pressure-relieving and body-contouring
Ideal for:
V-berths with under-bed lockers or hatches
Boats with limited lift-up space
Cabins where one side of the bed gets more use
Sailors who hate faffing with heavy foam
Every mattress comes with the option of a removable, zip-off washable cover, tailored to the exact split shape. Choose from three hard-wearing, breathable fabrics — all proven in marine environments:
Naturally breathable and moisture-wicking
Made from sustainable wood pulp
Cooling, soft, and hypoallergenic
A solid choice for warm cabins and eco-conscious buyers
Tencel natural fibre promote a cooling more comfortable nights sleep
Lightly padded and breathable
Helps regulate temperature overnight
Great for summer cruising and enclosed cabins
Quick-drying and easy to care for
Cooltech covers provide exceptional levels of cooling, Helping to wick away moisture resulting in a more restful nights sleep
Wipeable, washable, and tough on wear
Stain-resistant and breathable
Ideal for boats with pets, kids, or regular turnover
Perfect for no-fuss maintenance
All covers are made to measure and follow your split layout precisely — so both halves fit snugly, even when in use separately.
Sometimes, a full one-piece just doesn’t work. If you’ve got under-berth storage, or you want the flexibility to remove one half of your mattress for ventilation or maintenance, a horizontally split V-berth mattress is the smart choice.
You still get a single sleeping surface when the halves are together — but with more access and easier handling. No lifting gymnastics. No pulling apart the whole berth just to get to your kit.
Complete your berth setup with our TENCEL™ Shredded Memory Foam Pillow — breathable, adjustable, and compact enough for tight marine cabins.
✔ Cooling TENCEL™ cover✔ Zipped shredded fill — adjust to suit your comfort✔ Hypoallergenic and skin-safe✔ Machine washable for easy care
Designed for comfort. Built for boats.
We also make custom cushion covers for interior and exterior boat seating — including saloon benches and cockpit pads. All covers are made to order in your choice of TENCEL™, Cooltech™, or Easy Clean fabrics.
👉 View our custom boat cushion covers here.
We’ve been cutting marine foam and mattresses for over three generations. From oddly shaped bunks to modular split berths, we know how to get the fit right — no bodging, no trimming, just proper comfort made for your space.
Fully custom horizontally split V-berth mattresses
High-density or memory foam
Made-to-measure fabric covers in three marine-ready options
Handmade in the UK
Delivered to your marina, home, or mooring
Please visit our sister site www.thefoamshop.co.uk
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