Mattress: Get the best nights sleep with this luxury deep filled memory foam sprung mattress. Features: With a layer of high density memory foam that relieves pressure off your body, plus an open coil spring system to give support in all the right places. Sizes: Single, Double or King. Wool layer: A deep layer of wool works to keep you warm in winter and cool in summer, plus helps to maintain the longevity of the mattress. Hypoallergenic: Anti-dust mite, antibacterial and anti-microbial ensuring the ultimate fresh sleeping environment. Mattress depth: Feel the supreme comfort from a 23cm mattress depth (approx.).