The Salomon Unisex Trail Gaiters High Lab are designed with intrusion protection to keep debris like rocks, sticks and snow out of your shoes. Made with durable and highly breathable elastic jersey fabric, the gaiter is lightweight and ready for a long run. Featuring ankle bones protection to give you that extra security while on the trail. Salomon's simple one-piece design slips on and off your shoes quickly. Reflective details for increased visibility during night and early morning runs. Sizing (Men's Shoe Size): S: 4.5-7, M: 7.5-9, L: 9.5-12. Material: Synthetic.