I prefer fitted to use fitted sheets but won't be able to on this very thick mattress. Because of the memory foam, I expected it to be more compact and lighter than those without, but is deep and very heavy (will be difficult to turn despite handles). It is for my 7yr old's bed and she is literally climbing into bed because it is now a couple of inches higher! My daughter finds the mattress comfortable but I probably would have returned if I had had the time.