ARCHITECTURE: 3 piece Cabrio designMATERIAL: PP/PPBUCKLES: 2 AluLINER: Expandable Junior ComfortSOLE: AlpineBINDING SYSTEM: Alpine / GripWalkSIZES: (CONVERSION PAGE)Adjustable Shell Sizes– Size 3: 22.5/25.5– Size 2: 18.5/21.5