The sealy activsleep ortho extra firm mattress is a super-firm orthopaedic mattress from world-renowned sealy. Designed to help you feel rested and revitalised, the activsleep range helps you get the great night's sleep you need. Sealy's zero deflection spring system delivers plenty of firmer support, exactly where you need it the most. There's no transfer of movement between you and your partner, so you'll get a peaceful sleep, undisturbed by tossing and turning. Hypoallergenic and approved by allergy uk, it's a good choice if you're looking for a healthier sleep. It comes complete with free next day delivery and a 5 year guarantee as standard.