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. Oboz Bridger Low B-DRY Hiking Shoes - Men's, Wide, Dark Shadow, 15, 22701-101-15-Wide