Firmness: Medium soft. Open coil: With a traditional European open coil Bonnell spring system, which distributes body weight evenly. Bedding: Get a deep quilted memory foam open coil spring mattress. Designed with: A super soft deep quilted wheat bobble fabric for the top panel, made for cushioning your body. Sizes: Choose from small single to king (see Full Details). | Memory Foam Spring Open Coil Grey Quilted Mattress - Single | Wowcher