This is my third Propad overlay. They don't last for ever, but had 8 years wear out of last one. The latest one has a blue cover rather than pink. Great that it is available in various bed sizes. It stays in place on top of the mattress with no slipping. Needs turning from top to bottom to even out wear. Unlike memory foam, no issues with sinking in & not being able to move. Apart from protecting me from pressure ulcers, it makes bed making easy. I simple put sheet round overlay rather than it & mattress.