The memory foam will contour to the shape of your body providing support rather than resistance while you sleep. The foam core is highly durable and will not break down like other foam mattresses, even after years of use. Ample sleep surface at 1900mm x 650mm x 90mm unrolled. The mattress features a Ripstop polyester bottom and 550GSM PVC covered top. Rolls up tight at 700mm H x 350mm diameter. Easy to carry and store with the included waterproof carry bag. Simply fasten on the roof rack with Stratchits - by Front Runner or tucked away in the boot. Weighs 6.5kg.