Mattress: Get a zig zag memory fibre open coil sprung mattress. Sprung mattress: 13.5 gauge open coil spring system allows the weight to be distributed evenly for extra support and comfort. Sizes: Option of small single, single, small double, double or king sizes. Temperature control: Not only is this soft and kind to the skin, it also offers a cool sleep by absorbing excessive heat when hot. Memory fibre: Constructed with two layers of high quality visco-elastic memory fibre which contours to the body and provides anatomical support. Filling: With hypoallergenic and anti-dust mite fillings for a cleaner healthier sleeping environment. Grey Zig Zag Memory Coil Sprung Mattress | Single | Living Social