These gaiters are good for hiking, walking, backpacking, cross-country skiing. They are made of durable waterproof breathable materials to sustain harsh weather. Pair these gaiters with hiking boots or ski boots to keep rocks, dirt and snow from getting into your footwear. These gaiters fit most US shoe size 8-10 (European shoe size 41-43). Use the following measurements as guide when choose size. Detailed measurements: * Front length: 14.6 inch (37 cm) * Top opening circumference: 17 inch (43 cm) * Calf circumference: 16.7 inch (42.5 cm) * Ankle circumference: 15 inch (38 cm) * Bottom opening circumference: 18 inch (46 cm) Weight: 7-8 oz per pair. Check our other listings for small, large and extra large size.