Xspec 1/2" Thick 48 Sq Ft Rubber Top EVA Foam Gym Mats 12 pcs, Blue BlackEach pack comes with 12 tiles and 24 borders to cover 48 square feet. 1 Tile = 24" x 24" (2 ft x 2 ft). The mats have 0. 55" of thickness (including foam and rubber top). The mat's rubber top and EVA foam is good for traction and softens impact. The mat provides cushion and protection for hard floor surfaces in the garage gym, fitness room, basement, workout room, weight room, etc. Excessive weight may cause indents on the tiles. Easy puzzle assembly