The Tecnica Mach Sport 90 HV is a fantastic option for the intermediate to advanced skier who has a medium wide forefoot and medium to large calf volume. Tecnica's LiftLock Buckles are very convenient to use, and the buckles stay up and open when you slip on or off the boot. A 35mm Powerstrap adds some rebound and helps keep the boot snug across your shin. The Adjusting Top Cuff Ratchet allows you to open up the top buckle to accommodate for a larger calf volume. Tecnica's CAS (Custom Adaptive Shape) Shell has dimples in key fit areas that make for easy customization by a bootfitter. These dimples hold a punch with less force and make the fitter's work easier. Celliant is a heat reflective material in the Comfort liner that bounces body heat back to the source to deliver some extra warmth to your feet when you are out on some cold days on the mountain. If you are looking for that perfect mix of comfort and performance, with a very accommodating fit, the Tecnica Mach Sport 90 HV is the ski boot for you. Best Fits a Mid-Wide Forefoot and Medium to Large Shaft of the Leg, CAS Shell, Comfort Liner, Celliant, Adjusting Top Cuff Ratchet, 35mm Powerstrap, LiftLock Buckles, Actual Flex: 90, Cuff Alignment: Dual, Warranty: One Year, Ski Boot Width: Medium Wide (102-103mm), Flex: Medium, Used: No, Ski/Walk: No, Forefoot Width: 103mm, Flex Adjustment: No, Buckle Count: 4, Category: Downhill, Ski Gear Intended Use: All Mountain, Instep Height: High, Calf Volume: Medium, Skill Range: Intermediate - Advanced, Model Year: 2022, Product ID: 608934, Model Number: 10196200 255, GTIN: 0888341770901