1/2" Thick Rubber Roll Matting is 12mm Rubber Flooring by American Floor Mats
1/2in Thick 48 Sq Ft Rubber Top High Density EVA Foam Exercise Gym Mats Non-slip 12 Pcs - Interlocking Puzzle Floor Tiles for Home Gym Heavy Workout Equipment Flooring - 24 x
1 Inch Thick Rubber Floor Gym Tiles(4 Pack) - 19.5" x 19.5" x 1" – Unofive