Foam Mattresses & Overlays
Find a foam mattress for your spare bed, caravan or daybed. Choose a standard size and foam grade, add an egg crate overlay, or order foam cut to your own dimensions. Customise Your Foam
Choosing a foam mattress or overlay
Standard-size foam mattresses
Start with the dimensions you need, then check the thickness and grade options for that mattress. Measurements below are length × width.
- Single foam mattress: 1880 × 920 mm; 100 or 150 mm thick; Standard, Medium or Premium grade.
- King single foam mattress: 2030 × 1070 mm; 150 mm thick; Standard grade only.
- Double foam mattress: 1880 × 1370 mm; 100 or 150 mm thick; Standard, Medium or Premium grade.
- Queen foam mattress: 2030 × 1530 mm; 100 or 150 mm thick; Standard, Medium or Premium grade.
For cot dimensions and product details, see the separate cot foam mattress listing.
Which foam grade should I choose?
For the standard-size mattresses above, Standard foam (16 kg/m³) is intended for very occasional use. Medium foam (23 kg/m³) is intended for occasional adult or guest use. Premium foam (30 kg/m³) is intended for more frequent use.
The single, king single, double and queen foam mattresses listed above include a zipped cover. Standard grade comes with a lightweight poly-cotton cover; Medium and Premium come with an UltraLoft waterproof cover. Check the selected product for current options.
Custom-cut foam for your mattress dimensions
Use the custom-cut foam calculator when the standard sizes do not match your project. Choose a shape, enter your dimensions in millimetres and select from the available thicknesses and grades for an instant price. The calculator prices a custom-cut piece of foam. It does not include the mattress covers described above.
Adding an overlay to an existing mattress
An egg crate foam overlay adds a layer on top of your existing mattress. It uses N23-130 foam and measures 50 mm at the peaks and 25 mm at the troughs.
Overlay sizes (length × width) are Single 1880 × 910 mm, King Single 2030 × 1060 mm, Double 1880 × 1370 mm, Queen 2030 × 1520 mm and King 2030 × 1830 mm. Some widths differ from the mattresses above, so compare the measurements before ordering.