Provides extreme outdoor traction on snow and ice. Patent-pending spike design enhances traction while high strength chains resist rust and abrasion. Flexible, sturdy toe and heel plate prevents snow build-up. Durable and lightweight. Adapts to most footwear. Comes with heavy duty nylon storage bag. Fits Women's size 13 - 15 and Men's size 11.5 - 13.5. Named after the sure-footed Tibetan Yak, Yaktrax stretch over everything from casual walking shoes to winter boots. Provides solid, predictable traction. Reduces the risk of falls and injuries. Can be worn in temperatures as low as -41° Fahrenheit. Colorful box with hanging tab.