The Century® Wood Grain Reversible Puzzle Mat is made of extra-thick, 1.5" foam with a wood grain pattern molded onto 1 side and a black finish on the reverse side. An interlockable design allows these mats to be combined with other Century® Wood Grain Reversible Puzzle Mats (sold separately) to cover a larger surface area. Century Wood Grain Reversible Puzzle Mat Brown - Exercise Accessories at Academy Sports