The K2 Revolve KF Men Pro Boots from the FL3X collection are Karl Fostvedt's pro model and among the stiffest FL3X boots, designed for freeride, freestyle and all-mountain skiing by expert skiers.

• Flex 130: high stiffness for stability and control during aggressive skiing, jumps and big-mountain lines.
• 99 mm last: 99 mm last width with a low to medium volume.
• Revolve Plus Shell: three-piece construction with TPU coating on the top and bottom.
• Intuition Pro Wrap liner: wrap-style Intuition foam liner for a close, comfortable fit.
• 45 mm elasticated cam strap: adds tension at the cuff for more direct power transfer to the skis.
• GripWalk sole: removable, interchangeable ISO 23223 rockered soles, fitted at the factory, for bindings with Marker's GripWalk system; the soles may only be changed by an authorised K2 retailer.
• Heat-mouldable shell and cuff: allow the boot to be customised to the shape of the foot and leg.