This superb mattress has a dense layer of supportive pu foam and an outer section of memory foam giving a sumptuous feel and providing an incredibly comfortable nights sleep finished with soft waved quilting this mattress has a medium feel with 175 mm reflex foam plus 55 mm of memory foam the life of this memory foam mattress can be prolonged with regular rotation the mattress is vacuum packed and will require 48 hours for it to return to its original size before use available in 2 sizes