King Size Sealy Mattresses

Expert quality for the perfect night's sleep: our huge range of Sealy mattresses offer you luxury comfort and unrivalled support for a sleep experience like no other! Choose from Posturepedic pocket springs, PostureTech spring systems, memory foam, latex or orthopaedic mattresses for enhanced care for your back. With up to 55% off, many are kept in stock and are available for Free Next Day Delivery - look out for selected mattresses that benefit from a Free Premium Delivery Upgrade to the room of your choice!