POWERSTRAP: While most traditional Velcro closures just pull together two sides of the shoe's upper, in the Powerstrap configuration a ribbon wraps around the foot, providing secure containment using just two straps. The instep and the midfoot are separately adjustable for customized fit and compression.
X4 OUTSOLE: For these versatile shoes we developed a specific outsole, the X4: a carefully considered combination of stiffness and comfort, to turn pedals effectively on mixed surfaces; blending nylon - with targeted stiffness - and a rubber tread for effective grip and durability.
X4 nylon outsole – with rubber tread, stiffness index 59