The Sealy Activsleep Ortho Posture Pillow Top Mattress is a mattress that cares for you as you sleep. Featuring high levels of orthopaedic support, it actually gets firmer as greater weight and pressure is applied. The result is perfectly tailored support, exactly where you need it most. A beautifully crafted pillow top mattress, the Activsleep Ortho Posture is a great balance of comfort and support - and it looks stunning too. Hypoallergenic and approved by Allergy UK, it's a great choice if you suffer with allergies. With our Free Next Day Delivery service as standard, you can enjoy your brand new mattress sooner. It comes complete with a 5 Year Guarantee too.