As the stiffest and most aggressive boot in K2’s freeride lineup, it comes as no surprise that the K2 Thraxis Men’s Snowboard Boot is back by popular demand and appears mostly unchanged for the new season. With a flex rating of 10/10, the Thraxis falls on the most precise end of the men’s performance spectrum and thus appeals to only the most aggressive riders seeking utmost responsiveness at the expert level. An H4 Focus BOA Fit System continues this trend by offering an unprecedented level of dialed-in precision, while a 3D Liner with Conda BOA lacing works from the inside out to keep the heel locked and loaded, and ready to respond. As a result, the Thraxis officially stakes its claim as the ultimate performance boot that—when combined with a Harshmellow Pro Footbed—sets forth with a quiet, smooth, and energizing ride.