Memory foam layer: The responsive cool blue memory foam layer relieves pressure points and contours to the shape of your body. Hybrid mattress: Get the perfect nights' sleep with this cool touch hybrid memory foam mattress. Cool Touch: Offers a cooler night of sleep with great breathability, and crystals in the memory foam which help regulate body temperature. Sprung: The medium firm mattress is supported by a system of open coil bonnell springs for longer life. Hypoallergenic: Treated with anti-bacterial cover technology, plus anti-allergy mattress to prevent dust mites. Sizes: Single, Small Double, Double and King. Hybrid Memory Foam Mattress | Blue | Single | Living Social