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.