After just a couple of uses, these pads broke! The foam bottom was creased and seemed slightly too big for the top part of the pad. With all the creases and buckling on the bottom, the sensors were registering when they weren't even being touched, making the pads impossible to use. I am returning these pads, as they are useless. I would recommend spending the extra money to get the ones with the 1" foam insert, which I've had before - they definitely lasted much longer than these!!