Sizes: Available in small single, single, small double, double or king. Comfort: With 13.5 gauge coil spring memory foam and a generous layer of memory foam on top, this mattress is designed for ultimate comfort. Support: Aims to mould to the contours of your body to offer full support all over and relieve pains and pressures. Hypo-allergenic: The mattress is hypo-allergenic, anti-microbial and dust mite preventive. Mattress: Get an open coil spring memory foam mattress. Open Coil Spring Memory Foam Mattress | Small | Living Social