Thanks to the super-light weight and smooth flex, the Dynafit TLT 5 Performance TF Alpine Touring Boot glides in the high altitude of the Himalayas and in the slightly lower altitude of your local rando races. Product FeaturesShell Material: [shell] Grilamid; [cuff] carbon fiberFlex: Lean Angle: 15 - 18 degBuckles: 2Buckle Material: Liner: Thermo-moldable Liner: yesLiner Closure: hook-and-loop strapWalk Mode: yes, 60-degree rotationSole: ClawBinding Compatibility: Dynafit Quick Step-InFootbed: Last Width: Claimed Weight: [single, size 27.5] 2 lb 5 ozRecommended Use: alpine touring, ski mountaineeringManufacturer Warranty: 2 years