Fitted over the top of the shoe and covering the lower ankle, the gaiter prevents debris from finding its way into your shoe or sock. Although the bits of dirt may be small, they can cause irritation on the skin, enough to knock you off your stride. A convenient strapless design allow for easy, snug and comfortable fitting. The material is flexible but also constructed to be strong and abrasion-resistant to stand up to bumps and scrapes on the trails. Highly breathable and lightweight, the ankle won't get overheated with a steady airflow entering and exiting the material. The Altra Trail Gaiters fit any trail shoe, they are especially compatible when paired with Altra GaiterTrap equipped shoes.