This fit my mattress perfect. I also do not hear the protector under my sheets. The actual protector is super soft and comfy. It fits incredibly well to the mattress, Nothing has moved. It also stays put when I change out my sheets which is a HUGE plus.
We were concerned that the mattress protector cover would take away the comfort from our wonderful 2 twin xl Got Luxe bed (for a split King). The size is perfect and it does not feel any different. Yea! We are able to sleep wonderfully. We love our Ghost bed and now the protector. It is waterproof and you can't even tell it is on.
My senior dog had tummy issues and vomitted on the sheets. Needless to say it went through to the protector. I quickly removed it from the bed and not only did it save my ghost bed from being ruined but it did not go through the protector. I followed the instructions to wash in cold water and air dry and is like new again. This is one product worth buying to protect your investment.