SuperMats Superlock Interlock Heavy Duty Recycled Rubber Weightlifting Anti Fatigue General Purpose Flooring - Middle Tile Solid black Interlock protective flooring. Recycled rubber construction protects your floors from the damaging effects of heavy exercise equipment. Also works well as anti-fatigue flooring at work stations Perfect for Use with weightlifting and cardio equipment. Superlock flooring is perfect to Use under weightlifting equipment, shop benches, garages, Cross training facilities, and home gyms Interlock design. Puzzle piece tiles Connect together with nearly invisbile seams with no tools, glue, or tape needed Dampens vibration and helps cushion heavy equipment. Helps prevent Excessive wear and tear to equipment and muffles weigh lifting equipment noises so family and neighbors are not disturbed Five colors available. Solid black, black with blue Fleck, black with green Fleck, black with Gray Fleck, black with Red Fleck. Corner, edge, and middle tiles with Straight edges are available 4 Pieces of Black Interlocking Floor Mats Reduces noise, Anti-fatigue Ideal for fitness rooms, laundry and utility rooms, rec rooms and dog kennels Trim with a sharp utility knife, clean with a damp mop Easy to remove