Hygienic: Hypo-allergenic & dust mite resistant. Sizes: Available in 10 sizes (see full description.) Mattress: Get a Dreemy Memory Foam Mattress! Comfort: Features a layer of memory foam. Support: 13.5 gauge open coil bonnell spring for extra support, Memory foam: Aims to relieve pressure points across the body. Dreemy Memory Foam Mattress | Living Social