If you are an off-road runner, Razer Gaiter Trail Running Gaiters are an essential part of your gear. Their purpose is simple: to prevent sand, dirt, prickles, mud, and gravel from getting in your shoes and causing irritation. Also saves your socks and keeps them cleaner! The gaiter height you needs depends on how much protection you want. Shorter ankle gaiters like these are made for trail running and summer hiking. A lesser-known use for Razer Trail Gaiters is to wear while doing yardwork to keep grass clippings, bark dust, mulch, and dirt out of your shoes. Size Large. Best fit is for ankle circumference of 9-10 inches. Helps reduce blisters and hot spots by keeping debris out of your shoes. Neon green with reflective rear stripe. Breathable, stretchy 90% polyester / 10% spandex fabric keeps your feet cooler. Metal shoe lace hook and durable Hypalon under-arch strap keeps trail gaiters in place. Easy on and off.