Insoles made with Bloom Algae technology use sustainable algae biomass without compromising durability or comfort. Oboz ACT (Adaptive Cushioning Technology) Impact Midsole leverages Intelligent PU to create lightweight midsoles for a variety of footwear with long-lasting durability, support and rebound for optimal comfort. Constructed using high tenacity fiber technologies, weight for weight, CORDURA fabrics are exceptionally durable There's no denying feet sweat and trails can get muddy. There's also no denying the ability of Oboz's proprietary waterproofing system, B-DRY, lets sweat escape while keeping moisture out. Overgrown trails below treeline followed by knife-edge ridgeline scrambles en route to the summit are what pull us towards the mountains, so it only makes sense to wear shoes as adept at mountain travel as the Oboz Men's Bridger Low B-Dry Hiking Shoe. Conceived in the mountains of Montana, the Bridger is designed for the kind of hikes where trail traffic is minimal and the obvious path often ends before we reach our destination. The boot is equipped with a waterproof, breathable membrane to repel moisture from rain, puddles, and creek crossings, while a sturdy combination of nubuck leather and textile make the boots durable enough to withstand heavy and repeated use in the mountains. Oboz sandwiched the boot's TPU chassis between an aggressive rubber sole and cushioned EVA midsole, then added a nylon shank for added stability when traversing sloping trails and ascending steep scree.