Mattress depth: 25cm. Mattress: Get a body contouring 3D wave quilted memory foam mattress. Micro quilted: Encased in a deep micro-quilted fabric. Open coil: Features a 13.5 open coil bonnel spring. Hypoallergenic: With Hypoallergenic qualities. Six sizes: Choose from six sizes (see below). 3D Wave Quilted Memory Foam Mattress | Living Social