Six sizes: Available in sizes small single - super king. Spring mattress: A spring mattress with a generous layer of cool blue memory foam on top. Bedroom essentials: Perfect addition to any bed! Hypoallergenic: Foam is anti-microbial and dust mite preventative. Bed mattress: Get a cool blue memory foam pocket sprung mattress. Memory foam: Features a 13.5 gauge coil spring memory foam. Cool Blue Memory Foam Pocket Mattress | Living Social