Head Nexo LYT 100 G Ski Boots - Women's Features: Smart Frame Duo Flex - Enables a progressive and reactive flex with precise ski control through all phases of the turn. Stiffer/Softer Flex Adjustment - It's an adjustment placed on the spine of the cuff to select between a stiffer or softer flex depending on snow condition and level of skiing. Single Canting Women Double Adjustable Cuff - A double mechanism in the upper rear part of the boot which adapts the circumference of the cuff up to 1 cm to fit individual anatomical needs. Located on the either side of the cuff's spine, this mechanism allows the cuff to adjust up to 1 cm to better fit the anatomical needs of skier, giving these Head ski boots an added level of comfort. Liner: Perfect Fit 3D CUSTOM - Perfect Fit is the revolutionary customization system that provides the best level of precision, comfort and durability. The Perfect Fit material allows the liner to adapt to your feet, ensuring maximum power transmission. 5 minutes of heating at 80 degrees, is all that is required, to make the lining adapting and get the perfect precision and comfort. HP Frame Footbed Auto Adapt Tech 30 mm Velcro Strap Buckles: 4 Micro-Adjustable Alloy Buckles Low Profile Buckles 1 Supermacro Light Ratchet - An adjustable, ratcheted toothplate that provides 28 mm of calfadjustment.