Features:- Dual Core- Shell - Polyurethane- Cuff - Polyolefin- Dynafit® Insert- Power V Lock 2.0- Rubber Arch Pad- External Screw Canting- Max Grip Alpine Soles- Gripwalk® Compatible- Dual 3d Liner Pro – Ultralon®- Customizable- 35mm Power StrapSpecifications:- Last: 97mm- Flex: 90- Sizes: 22.0 to 27.5