The sareer diamond memory foam matrah mattress developed by the nbf approved sareer team consists of a 15cm layer of reflex foam and a 5cm layer of memory foam the mattress features a zip removable memory fabric 2 way stretch cover and is dust mite resistantdimensionssmall single w 75xm x l 190cmsingle w 90cm x l 190cmsmall double w 120cm x l 190cmdouble w 135cm x l 190cmkingsize w 150cm x l 200cmsuperking w 180cm x l 200cmdepth 20cm