Product features and material This mattress is extremely useful for small living space as it can be folded and kept in confined spaces. Comes in various thickness, it provides the necessary comfort with its high density foam. For extra comfort, this orthopedic mattress can also be used on top of your existing mattress. Further to that, the washable knitted fabric cover allows a long usage of this good-to-have 3 fold mattress. Soft knitted fabric to minimize hot temperature Washable knitted fabric Orthopedic support Extra firmness for back support ISPA Approved Anti-Dustmite/Anti-Bacteria/Anti-Fungi Treated with RUDOLF 5 years warranty Sizes available Single 3" : 190cm x 91cm x 7.5cm Single 4" : 190cm x 91cm x 10cm