The mibed perua reflex mattress is a comfort enhancing and pressure relieving reflex foam mattress this mattress has a reflex foam core and a non slip base that means that if necessary you will stay in your preferred position throughout the nightdimensions small single w 76cm x l 200cm single w 90cm x l 200cm small double w 122cm x l 200cm double w 137cm x l 200cm kingsize w 152cm x l 200cm superking w 182cm x l 200cm