This mattress is part of the Komfi Active Collection. The Trend mattress is offered with 3 distinctive covers, this is the one with the Seaqual cover which is a fixed cover that has been made using plastic bottles that have been removed from our Seas and Oceans by fisherman and recycled in to a environmental fabric. . The Trend mattress is 15cm deep and offers a triple layer construction with a 10cm base layer of Ecofoam foam and a 2.5cm middle layer of slightly softer Reflex Foam and then a 2.5cm top layer of Nueform memory foam. The Trend mattress also is available in Single, Double and King Size.