DA PAM 670-1 compliant, with full-grain leather, the lightweight SFB B1 is designed for speed and flexibility over rough terrain. The flexible sole is equipped with an aggressive traction pattern and features sticky rubber for multi-surface grip and an internal rock shield to help prevent punctures. Nike Air cushioning in the heel delivers high-performance comfort no matter where your adventure takes you. Trail Ready Full-grain leather and nylon canvas provide durability and breathability. Time-Tested Comfort Nike Air cushioning in the heel equips you with comfort so you can focus on the journey ahead. Ready to Go Dual-zone lacing integrates with a durable webbing system for enhanced stability and a locked-in fit. Rugged Traction Rubber outsole with reinforced heel offers durable traction on a variety of surfaces while the sawtooth design at the arch provides additional grip. More Benefits Reinforced stitching and rubber at the toe add durability. Foam in the midsole gives you lightweight cushioning. Internal rock shield helps prevent punctures and reduce pressure. Shallow flex grooves are anatomically placed to let your foot move naturally while preventing debris from sticking. Ventilation ports on the side help keep your foot cool.