SPIN ST combines high levels of traction with lightness and breathability for maximum performance on muddy terrain with any type of altitude.The upper is designed with a breathable and abrasion-resistant fabric, and the collar protects the ankle from any kind of scratches.The Fixion ST sole in Vibram Megagrip compound with Traction Lug technology is designed with a 7 mm lugs geometry for excellent traction and braking power.