This unique Back2Life Comfort Mat has been specially designed to work with your Back2Life machine to encourage comfortable, correct positioning, ensuring maximum results. This one of a kind accessory also has a unique, easy fold design, so it stores quickly and easily in any compact space unlike those big, awkward roll up mats. Back2Life Continuous Motion Massager Sold Separately. Materials: Rubber. Dimensions: 48"L x 24.25"W x 0.02"H Weight: 1 lbs.