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. The Oboz Bridger Low BDry will have you ready for every adventure on any trail! Waterproof nubuck leather and high abrasion fabric upper. B-Dry waterproof breathable membrane allows vapor to escape your foot, but is impervious to water coming in. Lace-up closure for snug fit. Molded rubber toe cap and heel counter. Breathable textile lining wicks away moisture. BFit Deluxe footbed provides supportive cushioning for all-day comfort. Dual density EVA midsole for stability and cushioning. Asymmetrical PU heel pod offers excellent support. Nylon shank for lateral and torsional flex control. Lightweight TPU chassis provides long term support, motion control, heel lock, stability and prevents stone bruising without inhibiting flex. High-friction, nonmarking rubber outsole grips with ease in all directions on both wet and dry surfaces thanks to the toothy side lugs and 4mm directional lugs underfoot. Board lasted construction.