The K2 Spyne 120 HV is a downhill ski boot aimed at riders who need a bit more room in their footwear without sacrificing performance. Its name hints at a wider internal fit, making it suited to those with broader feet or anyone seeking extra comfort on the mountain.
With a 102 mm last, the Spyne 120 HV provides added space around the forefoot, reducing pressure points and hot spots during long ski days. The flex rating of 120 delivers a firm response underfoot, giving you direct power transfer into your skis without feeling overly stiff. The high-volume design complements these features by offering a more forgiving fit, so you can stay focused on technique rather than battling an uncomfortable boot.
The term “last” refers to the width of the boot’s interior at its widest point—in this case, 102 mm—so you know where extra room is built in. The flex rating measures how much resistance the boot shell offers when you lean forward: a 120 flex is on the stiffer side, translating to quicker edge-to-edge transitions and greater control at higher speeds.
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