Atomic's Hawx Prime XTD series has been a crowd pleaser since day #1, and adding the new BOA® Fit System to the Atomic Hawx Prime XTD 105 BOA W GW Alpine Touring Ski Boots only makes them better. Expert skiers who spend a good part of their season skiing out of bounds, skinning and/or bootpacking will benefit from the ultra smooth Freelock 4.5 walk mode and enjoy the increased comfort of the BOA® closure system over the top of their feet and instep.