4pk Anti-Fatigue Flooring Interlocking Mats Each Square: 20.5L x 20.5W x .38D Grey Anti-Fatigue Interlocking Mats With Textured Finish; Water Resistant, Easy To Clean, Shock Absorbing; Straight Edges Easily Convert To Interlocking Edges Fits Together Like A Puzzle, Trim To Fit Space; Great For Garages, Basements, Kitchens, Laundry Rooms, Playrooms, Exercise Rooms, Work & More