Constructed using the toughest polypropylene material to protect your running track surface from metal cleats, grounds maintenance equipment and other crossover traffic. Maximum protection, yet the material is porous enough to allow rain and other liquids to drain through. Black material is bordered with galvanized steel chain wrapped in vinyl and double stitched along all edges. Chain cross-over edge adds weight to prevent wind from lifting — no stakes or staples needed. Standard border colors: white or gold.