Mattress: Get a velocity pocket sprung mattress! Layered: With natural layers of wool and cotton fibres, plus memory foam for softness. Sprung: Features a quality pocket spring unit for great pressure relief and support. Fillings: Mattress has a unique knit sleep surface which is complete with anti dust mite, anti bacterial fillings to prevent bacterial growth and odour. Cover: Features a super-soft and breathable cover. Sizes: Choose from single, double or king-size (see below).