Foam Interlocking Floor Mats (Case of 48), Black, Waterproof, Exercise, Gym, Basement, Garage, Puzzle Piece, Protective TNT exercise floor mats specially designed to absorb the shock that occurs on gymroom floors Protective mats boast lightweight design and easy locking system Mats make great playroom flooring and are great in basements and garages Each mat measures .5 inches thick x 12 inches long x 12 inches wide Each set of 48 mats includes 36 border pieces to finish your floor or space cleanly