Six sizes: Choose from six sizes (see below). Memory foam mattress: Get a quilted memory foam mattress. Bedroom essentials: Perfect addition to your bed. 15cm depth: With a 15cm mattress depth for deep cushion feel. Bonnell spring: Features a 13.5 open coil bonnell spring for a longer life. Quilted layer: Deep quilted for extra comfort. | Quilted 15cm Memory Foam Mattress | Wowcher