Distributed by The Sleep People Limited, this mattress features an open coil spring unit and a layer of memory foam. It has a breathable micro quilted top panel and is hypoallergenic with anti-dust mite features, offering 7 comfort layers. The total depth is approximately 18cm. This is a single-sided mattress that only requires rotation. It arrives vacuum-packed, rolled, and boxed. The firmness is medium-soft. Available dimensions: 2ft6 small single (75cm x 190), 3ft single (90cm x 190cm), 4ft small double (120cm x 190cm), 4ft6 double (135cm x 190cm), and 5ft king size (150cm x 200cm). The carrier may contact you by phone to arrange a delivery time, so please ensure your contact number is up to date in your Groupon Account. Shipping is available to most of GB mainland.