Offering the ultimate in body support, the Emma Smart Firm Mattress combines advanced foam layers and a zoned core for a deeply restorative night’s sleep. Product Details Mattress type: Foam Depth: 21 cm Firmness: Firm Fillings: HRX foam with zoned core, adaptive comfort foam, AquaGEL foam Cover: 99% polyester, 1% elastane Sizes: Super king, king, double, small double, single Features Perfect for those looking for a firm-feel mattress with impressive body support 100 night sleep trial 10 year guarantee Advanced HRX foam layers and zoned core ensure excellent pressure relief Adaptive and open-pored AquaGEL offer precise body contouring Fully removable premium cover with handles and washable up to 40C Anti-slip coating on the underside of the mattress