Made with 95% post-consumer recycled rubber from car tires making them an exceptionally eco-friendly anti-fatigue option with a stylish confetti-pattern top. High-density, closed-dell nitrile-blended cushion provides excellent anti-fatigue properties. Certified high-traction by the National Floor Safety Institute (NFSI). Rubber surface is molded, not glued, to the nitrile-blended cushion so it will not separate. Welding safe. Thickness: 7/8".