Fox Union Boa MTB shoes have an improved adjustment system, and your mountain biking adventures will be limitless! Discover a more powerful ride and a perfect fit with the dual BOA Li2 system of these trail shoes. With features that make them sturdier, such as a molded toe box that protects against stone impacts, the Fox Union model handles the toughest challenges of trail riding with ease. Heat-sealed one-piece upper that reduces weight and offers a precise fit. Dual BOA Li2 system allows you to make micro-adjustments while on the move and improve power transfer to the pedals. The reinforced toe protects against stone impacts. Adjustable lower and upper arch support for a customized fit. Molded internal reinforcement plate that optimizes power transfer and improves comfort when walking. Ultratac rubber compound provides excellent durability and unmatched grip. Two-bolt attachment system is compatible with all major pedal manufacturers. Materials: TPU, EVA, rubber. Color: Vintage white.