Tough pebble-embossed, UV-resistant rubber prevents spiked shoes from slipping or puncturing the surface. Design and Details: Durable construction lasts multiple seasons Reinforced rubber sidewalls maintain the base's shape and hold up under impact, even with extreme use Heavy-duty foam pad holds up under traffic and makes for less impact when running on the base Nickel-plated stanchion pad and triple-reinforced screw-in steel anchor system resist rusting to endure all weather conditions 3 Molded pro-style bases, 3 ground anchors, and 3 base plugs included Technology: UV-resistant rubber Additional Details: Each base measures 15"x15"x3"