K2 BFC 100 BOA Ski Boots 2027

The BFC 100 BOA® balances comfort and support with a dial-in fit. The BOA® Fit System lets you fine-tune pressure in seconds, and Apres Mode 2.0 frees the cuff when you're walking. A heat-mouldable shell and 100 flex make it an easy boot to live with all over the mountain.

Who it's for: progressing all-mountain skiers who want a comfortable, quick-to-adjust boot with a walk mode.

Key features

• BOA® Fit System – Micro-adjustable dial and laces for a precise, even fit
• Apres Mode 2.0 – Rear lever frees the cuff for 50° of movement when walking
• TPU Shell – Smooth, progressive flex with reliable edge control
• CushFit Comfort Liner – Extra foam in key zones for comfort straight away
• Adjustable Calf – 50mm of cuff adjustment to suit different calf shapes
• Hands Free Entry – Overlapping shell materials make stepping in and out easy
• Powerfuse Spyne™ – Rear Y-shaped spine adds support and lateral stiffness
• Fully Heat-Moldable – Shell and cuff can be heat-moulded for a personal fit
• GripWalk Outsoles – Rockered, grippy soles for easier walking

At a glance

• Flex: 100
• Last width: 100-103 mm
• Shell: TPU shell, PP cuff
• Liner: CushFit Comfort
• Closure: BOA® Fit System + 40mm Velcro® power strap
• Sole: GripWalk (ISO 23223, removable, pre-fitted)
• Walk mode: Apres Mode 2.0 (50° range of motion)
• Terrain: All Mountain, Piste, Park, Powder, Touring
• Ability: Beginner to Intermediate
• Sizes available: 25.5, 26.5, 27.5, 28.5, 29.5, 30.5

Size guide