If you like a firmer mattress, youll sleep better on the hypoallergenic Sealy Activsleep Ortho Extra Firm mattress. Exceptionally firm thanks to its zoned foam and continuous spring construction, this British-made 25 cm deep mattress is also hand tufted for a firmer and more supportive feel. A combination of impressive sleep technologies makes this mattress a winner. Sealys PostureTech Zero Deflection spring system creates a consistently firm sleeping surface and helps avoid motion disruption for more restful sleep. The cover features Adaptive, an intelligent textile technology, designed to keep you comfortably cool by accelerating moisture wicking, evaporation and cooling, and Purotex to get rid of dust mites and other allergens. A Furniture Village online exclusive, the handcrafted Sealy Activsleep Ortho Extra Firm mattress is part of the firmer feel Sealy Activsleep Ortho Posture collection of mattresses and divan sets. Did you know?: The mattress should be aired for four hours after delivery to freshen and remove any aroma from storage. It may take time for your mattress to attain its full size once the springs have settled to the correct position. This is due to the mattress being upright during transit. Settlement of fillings and indentations caused by body weight compressing the fillings are natural and not considered defects. This can be minimised by regular rotating (unless yours is a dual tension mattress).