The Fox Union BOA MTB shoes are designed with added focus on fit, comfort, and durability for different riders and riding styles. The name Union was developed in reference to the marriage between the rider and bike. Dial in power and fit.Key Features:One-piece welded seamless Upper reduces weight and offers a precise fitDual BOA® Li2 system provides on the move micro-adjustability and improved power transfer to the pedalsMolded Toe Cap designed to protect against rock strikesHigh and low arch support options for a custom fitMolded internal stiffening plate optimizes power transfer and off bike comfortUltratac™ rubber compound provides excellent durability and unprecedented grip2-bolt cleat system compatible with all major pedal suppliersTpu/Eva/RubberThe Union BOA features the Dual BOA Li2 system to provide on the fly mirco adjustability and improved power transfer to the pedals through a precise and secure fit. All models in the Union range feature similar single-piece welded upper construction backed with a molded toe cap to provide a durable, protected and comfortable riding experience.