Year after year, the Salomon X Pro 90 W Ski Boots are the best selling womens boot at evo, and theres a few reasons. They fit great out of the box, and the fit only gets better after the Custom Shell heat molding process is completed. They have an average fit that agrees with most feet, but exceptional heel hold even for those with relatively narrow dimensions in the ankle and heel. The clean and low profile design is pleasing to the eye. Whether youve been in an X Pro for years or are coming from some totally different boot, the X Pro 90 W is a winner.Fit: Last: 100 mm – An average last for most normal width and volume feet or slightly wider. 360? Custom Shell – Salomons proven heat customization process lets you dial in the fit perfectly.Flex: 90 – A medium stiff flex designed for intermediate to advanced women skiers.Liner: My CustomFit 3D Performance Liner – Superior heel hold and new anti-packing foam. Womens Liner – Specific volume and shape, with added warm comfy fur inside.Shell Materials & Design: TwinFrame Technology – Salomon dials in just the right amount of rigidity where its needed for performance and leaves the shell softer in other areas to enhance comfort and ease of entry. Shell – Polyurethane. Cuff – PolyurethaneStance: 24mm Oversized Pivot – Reduced play for extreme precision and direct power transmission. Because many modern all mountain skis are wider, they require more torque to stay on edge. Oversized Pivot answers the need of wider skis. 4mm Integrated LifterBuckles: 4 Micro-Adjusting Aluminum 3D BucklesPower Strap: 35mm Velcro Power StrapSole: Heel & Toe Removable Sole Pads – Heel and toe pads can be replaced when worn out.