• Cuff: PU • Outer: PU • Soles: Non-replaceable - Alpine DIN 5355 • Buckles: 2 Micro ALU Scr.; 2 Micro ALU Scr. • Liner: Dobermann 5 Race with L.C. laces • Soles 5 mm shorter (all sizes) • Solid soles according to ISO 5355 standard • New risers of 3 mm/4 mm/5 mm • The specially designed column facilitates recovery • The bi-injected design offers support while providing a smooth forward flex • The customizable flex allows you to control energy transmission to maximize response