Designed for comfort on the move and built for the rugged reality of backpacking, the Aerios AR provides outstanding support, protection, fit and freedom. Its 3D molded Ultralon collar moves with the ankle while tightening and protecting it. It integrates with the tongue, creating a unified piece and a comfortable fit. GORE-TEX provides durable waterproof, breathable protection and underfoot confidence comes from an aggressive, mud-shedding heel pattern and the sticky Vibram XS Trek outsole.