Get a Ruby orthopaedic memory sprung mattress. Eight inches deep with a memory foam layer which contours to your body's natural shape. Features a 13.5 open coil bonnell spring which aims to relieve pressure points and promote good blood circulation. Orthopaedic mattress with a medium/firm comfort rating - ideal for front or back sleepers. Hypoallergenic and deep micro quilted for extra comfort. Choose from small single, single, small double, double, king or super king sizes. 8" Orthopaedic Memory Sprung Mattress | Small | Living Social