The Hybrid Ultima Geltex 2800 Pocket Mattress by Sealy: designed for the best night's sleep - ever! Featuring 2800 individual pocket springs and a deluxe 8cm layer of Geltex, this mattress is wonderfully comfortable. With a softer feel, the Ultima is perfect if you love gentle support. It's approved by Allergy UK so you can sleep peacefully. Enjoy Free Next Day Delivery to the room of your choice, plus Sealy's 5 Year Guarantee as standard.