Buckle into the Rossignol Hi-Speed 100 HV ski boots for high-performance control and comfort to ski all day long. Made for skiers who need a high-volume fit, Rossignol engineered the boot shell and cuff through generative design for maximum energy transfer and high-speed control through every turn. Adjustable flex and canting let you personalize the boot feel and response to match your skiing. A thermoformable liner lets you customize the fit. Thinsulate insulation enhances liner warmth, so you can focus on your skiing. Buckle into next-generation control with a fit that lets you ski all day.   FEATURES: High Volume Fit features a 102mm last for forgiving anatomical feel regardless of foot shape Lightweight, Full Power Data-driven Generative Design minimizes boot wall thickness for the most effective use of material to reduce weight and enhance power transfer Better Skiability, Better Fit technology provides targeted power transmission and shell wrapping, resulting in livelier rebound, response and control Optimized Rebound and Response Dual Core Cuff combines softer plastic to wrap the lower leg with harder plastic where needed for support and power transmission for optimized performance and fit Adjustable Flex provides an adjustable flex range of +5 to -5 for customized power, performance and comfort Custom-Fit Comfort features customizable zones for comfort-driven fit with increased heel support and softer padding through the ankle and instep Insulated Warmth Thinsulate Platinum keeps feet warm in damp and cold conditions for all-day comfort with advanced odor control Optimized Fit and Warmth Seamless Toe Box eliminates pressure points for optimized out-of-the-box fit and reduces heat loss by 20%