The Bangtail Mid Insulated Waterproof has the components to beat the winter elements including a Vibram Arctic Grip outsole, PrimaLoft BIO insulation, our ACT+ Midsole, and B-DRY waterproof breathable technology. Whether your plan is to hike the Bangtail Divide Trail or snowshoe in your backyard, this boot has you covered. VIBRAM® Arctic Grip innovative technology specifically engineered and designed to perform on wet ice. PrimaLoft has set sustainability forward with the first-ever biodegradable*, 100% recycled synthetic fiber, for insulation and fabric applications. ACT+™ rubberized EVA adapts to varying terrain. This unique blend of dual-density, lightweight cushioning system provides the wearer a high level of energy efficiency and a softer heel-strike landing zone. B-DRY waterproof/breathable membrane and water-repellant nubuck leather upper with elastic side panels. REPREVE® contains recycled materials helping us lighten our impact on the planet.