Eco Mattress: Invest in a good night's sleep with this supportive mattress. Firmness: With a firmness rating of medium, this mattress offers you the perfect night sleep that molds to your body with the CertiPUR-US certified memory foam. Ultimate comfort: Made for maximum comfort, this 11cm thick mattress supports your body whilst you sleep. Sizes: Available in sizes 2ft6, 3ft, 4ft, 4ft6, and 5ft. Breathable: Designed with breathable moisture-wicking fabric that keeps you cool all year round.