Hygienic: Hypo-allergenic & dust mite resistant. Mattress: Get a cool touch memory sprung mattress. Sizes: Available in 5 sizes (see full description.) Comfort: Features a layer of memory foam. Memory foam: Aims to relieve pressure points across the body. Support: 3.5 gauge open coil bonnell spring for extra support. Cool Touch Memory Sprung Mattress | Living Social