My husband and I bought a brand new posture pedic and we both started having back and shoulder/hip pain. We searched around for a topper that wasn't too thick and would work with an adjustable bed. This is so comfortable and my husband and I don't wake up with pain anymore! The sheets fit and it doesn't slide around (it us under the mattress protector). My hubby is a back sleeper and I am a side sleeper and this works for both of us! I never want to get out of bed anymore!