Designed for mountaineering and backpacking, Mountain Hardwear's Ascent Stretch Air Perm Gaiter protects you from dirt, scree, and other debris. The Ascent's snug, flexible fit will not catch on objects or interfere with your movements, while the air-permeable, breathable back panels vent heat for greater comfort. Ideal for highly-aerobic activities. Constructed with Moutain Hardwear's ultralight Nylon Taslan stretch fabric at back, the Ascent Stretch Air Perm Gaiters feature four-way stretch for unlimited mobility. Cut to fit high-profile backpacking boots.