The F3R delivers premium performance for Foxs top pros and amateurs alike. Based on rider feedback the F3R is continually refined to enhance performance. Key refinements include a lower toe box for easier shifting, a comfort-tuned, more flexible chassis for enhanced feedback and reduced break-in time, and high grade top grain leather for enhanced durability. Biomorphic Chassis: Once-piece 3D chassis engineered to match the curve of your foot. Specific regions are harder for coverage and support using multi-density plastics. Pivotlock Buckle: Lip of the lever automatically engages and aligns itself. Buckle bases pivot on their axis allowing perfect alignment providing maximum support. Duratrak Outsole: Tread design based on the herringbone pattern used on the Fox Forma Pro. Race-inspired sole allows 100% foot peg interface in any foot position.