Rubber King interlocking tiles are the perfect solutions for your home or business. A perfect fit to pad cardio exercise workout equipment machines and gym gear accessories. Other applications include the office, boat, garage workbench, DIY workshop, garden storage shed, porch, stairs, hallway, or entryway. Outfit a pet crate, cage, kennel or training area. Rubber King tiles not only protect your floors but also your indoor air quality, our non-vulcanized manufacturing process creates tough, low-odor mats without harmful solvents or VOC's that meet the highest standards of indoor air certification. PVC and phthalate free. Made from recycled rubber tires, making the tiles a natural sound and vibration absorber, regardless of the exercise being performed you will be fully satisfied with how quiet and comfortable your flooring can be, the high traction sets you up for success. Black tiles with grey speckles are 19"x19" x 0.236" thick. 10 tiles create a 23.5 sq ft covered area.