The RC4 Pro MV BOA DYN is a brand new high-performance freeride boot. It features the BOA® H i1 Fit System to give a micro-adjustable fit, the RC4 ZipFit® liner guarantees heel lock and stability within the VACUUM shells, and the CARBONFUSED cuff offers even stiffness and stability. To meet the needs of true freeriders, the integrated Dynafit® insert in the toe makes the boot uphill compatible with multi-norm bindings and downhill compatible with all GripWalk® bindings. The fixed cuff provides utmost stability and trust to the rear in a way SKI/WALK cuff boots often don’t. With this ski you'll be able to send the really big lines.