Enjoy a deeper sleep and wake up feeling refreshed with the Ground Therapy Sleep Mat. Designed with a thinner, perforated 100% conductive carbon leatherette that feels great with direct skin contact or becomes nearly unnoticeable from under your fitted sheet. The conductive side is the smooth, leather-like material and should be placed up, nearest direct skin contact as possible. Use the straps to secure the mat directly to your mattress over or under your fitted sheet. Dimensions: 27" x 72"