Two-Strap, Soft, Progressive; Nylon+ Axis Unibase - The Axis Unibase features a fixed heelcup perfectly matched to Nidecker boots; Its asymmetrical design with off-axis PowerBeams boosts edge control, while rockered corners maintain natural board flex; 30% Glass Fiber / 70% Nylon; Nidecker's asym Nylon Meson hiback is designed to perfectly fit the contours of your boot; Tight contact at the spine and curved sides generate extra control, while the medium-flex is ideal for surfy turns and all-mountain creativity; 100% Nylon; Comfort Fit - A traditionally-stitched strap with a squishy foam-core for a great mix of control and comfort; Hexo Toecap - The Hexo Toecap strap features AuxTech; a 3D hinged auxetic pattern that expands evenly over your boot for next level comfort; Lightweight and easy to use, the Proton Ratchet is based on the same design as the reliable Axion Ratchet but with a durable, molded composite lever; AuxTech straps feature a geometric webbed design that expands evenly around your boot without stretching the material; Enjoy better pressure distribution, less foot fatigue and a more direct feeling of connection