The Horizon Voyager Memory Mattress was awarded a Which? Best Buy in December 2019. This stunning mattress features a firm, high-density foam foundation and an exceptionally deep layer of viscoelastic memory foam. At 10 centimetres deep, this is the thickest layer of memory foam around! The perfect marriage between support and comfort, this pressure-relieving mattress is a great choice if you need extra care for your back, knee and hip joints. Enjoy Free Next Day Delivery and a 5 Year Warranty, too!