The K2 Mindbender 120 BOA replaces the two lower buckles with a single BOA dial on the forefoot, which is the biggest change in ski boot closure in years. The dial pulls the shell around the foot evenly instead of clamping it at two points, and it adjusts in quarter millimetre steps with a glove on.

• BOA Fit System, one H+i1 dial on the lower shell: replaces the two lower buckles, with 0.25 mm micro adjustment and even wrap around the forefoot.
• Two alloy cuff buckles and a cam power strap above: the upper closure stays conventional.
• 120 flex: a stiff boot for a strong, aggressive skier.
• MultiFit last, roughly 97 to 100 mm depending on shell size: the width varies through the size run rather than being one figure.
• 50 degrees range of motion in walk mode: a Powerlock Spyne mechanism, with forward lean adjustable from 10 to 17 degrees.
• Tech inserts front and rear plus a GripWalk sole to ISO 23223: works with pin bindings and with GripWalk compatible alpine bindings.
• PrecisionFit Pro Tour liner: laceable, heat mouldable Ultralon foam with a flex notch for hiking.
• Current model: unlike most of the boots in this range, this one is still in K2's line.
• BOA® Fit System
• One H+i1 dial on the lower shell
• MultiFit last
• Roughly 97 to 100 mm depending on shell size
• Walk/Ski Mode
• Tech inserts front and rear plus a GripWalk® sole to ISO 23223