The Head Raptor Project RS Ski Boot has an adjustable flex because freeskiers cover so much terrain in one day they need tons of versatility Dial the flex up to a stiff 115 for steep descents in deep snow and when youre hiking or lazy legging back to the lodge after a long day on the brink dial it back down for a slightly softer feel The Head Raptor Projects double canting ability lets you adjust the angle of the boot to fit with your specific leg so you dont get strange pressure points that can make for a painful hike Specs Flex Rating 115/105 adjustable Last Width 98mm Liner HeatFit Pro liner Features Anatomical frame footbed supports and cushions HeatFit liner customizes the fit to your specific foot Microadjustable buckles to dial in the fit Shock wedge absorbs impacts Adjustable flex for dialing in the feel based on conditions Double canting adjusts to match the angle of your leg Advanced level freeskiers