The Allspeed 100 provides award-winning power and precision in a 102 mm last to suit a variety of foot shapes. The Sensor Blade shell is engineered for reduced weight and efficient energy transfer to the ski. An adjustable flex lets you customize the boot to match your skiing. Custom liners with Thinsulate™ allow pin-pointed customization for the comfort, warmth, and support to ski all day. GRIPWALK® soles feature a rubber tread and rockered toe for a more natural walking motion and increased traction.