Mattress: Get a bonnell spring memory foam mattress. Support: Offers full head to toe anatomical support and aims to relieve pressure points and promote blood circulation. Depth: Approximately 9" deep with an 8mm layer of memory foam. Sizes: Valid in small single, single, small double, double, king or super king. Comfortable: Features a long life bonnell spring, and is designed to contour to your body's natural shape. Hypoallergenic: Made from 500gsm polyester and knit fabric. 9 Comfort Memory Foam Mattress | Small | Living Social