The Climacool pocket mattress has a very expensive fabric cover with new technology which manages & adjusts the sleeping temperature to make sure that the user of the mattress stays cool in the Summer & warm in the Winter. This is a pocket sprung mattress with 1000 individually responsive springs to ensure maximum body support. The springs are covered with thick layers of hypoallergenic fillings which create a very luxurious sleeping surface as well as being resilient & designed to keep their comfort for many years. Mattress is 25cm deep Pocket sprung for maximum support Thick hypoallergenic comfort layers Climacool technology fabric Warm in winter & cool in summer Next day delivery