I wasn't sure what to expect, but I was intrigued to try this mattress pad.  It went on like a breeze, even though we have a pillowtop mattress already. I was worried it wouldn't fit and that the mattress itself would be too deep, but that was not the case. It has ample room to adjust so that the pad is just right on the bed, but not so much that it slides around. It added just the right amount of softness and I love the waterproof element since we have kiddos that sneak in with us in the middle of the night.