Light and elastic, it keeps mud and debris out of the shoe. The gaiter is not waterproof, but has a su ffi cient density to prevent rain and snow from passing through, together with a good breathability value. One of the reasons that often causes trauma in winter is that the Achilles tendon is wet, cold and rigid. By protecting the instep and increasing the heat even in the back of the leg, the gaiter helps prevent this problem. Available in 3 sizes: Small (36-39), Medium (40-43) and Large (44-47).