I not using this cushion as it was designed for - chaise lounge.  I have built a narrow raised platform bed in my truck camper and had a very difficult time finding a pad/mattress that would fit such a narrow bed.  This cushion worked out perfectly - even very comfortable to sleep on even though the base is a piece of plywood.  I wrap the cushion in a duvet cover to keep clean on dusty roads.  I'm very satisfied and surprised that this cushion has worked out so well.