Details Fast and light, comfortable and supportive, the Arc'teryx men's Aerios FL Mid GTX is for extended hikes on technical trails. The run-inspired design synthesizes with your foot to minimize friction, and the taller collar adds support and helps seal out debris. GORE-TEX waterproof protection with improved comfort and breathability. Agility, stability and confidence underfoot come from the Vibram® Megagrip outsole, compressed EVA midsole and integrated TPU shank. Upper GORE-TEX membrane Optimized mid height provides ankle support 4mm thickness OrthoLite™ 3D molded insert Taller collar adds support and helps seal out debris Midsole Compressed EVA foam midsole and integrated TPU shank increases agility, stability and confidence underfoot Outsole Vibram® MegaGrip™ rubber compound is durable and grippy Heel N/A Forefoot N/A Offset N/A Width D Weight 370g / 13.0oz Arc'Teryx Aerios FL Mid GTX Men's