Features: A deep micro quilted memory foam mattress with a four way stretch fabric for extra comfort, and a medium firm comfort level to contour to your body's shape effectively relieving points across the body. Memory Foam Mattresses: Get an open sprung wave quilted memory foam mattress. Mattress Depth: This mattress is approximately 15cm thick and features a 13.5 open coil bonnell spring for a long lasting life. Options: Choose between six different size options (all sizes are suitable for any type of standard sized bed base). Material: Responsive 40KG/M3 memory foam. Hypo Allergenic: You won't have to worry about allergies as this mattress is hypoallergenic. Open Sprung Quilted Memory Foam Mattress | Living Social