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, plus Sealy's 5 Year Guarantee as standard.