The known comfort of Genius meets a knitted hyper-vented nylon construction. Designed to maintain its shape and structure, the foot is well-stabilized during rides while staying fresh on the warmest days. A carbon/Nylon composite sole stiffness 6, Sidi's unique instep closure, and Dyneema high-density dials complete the model for a comfortable premium ride experience. Premium dual-layer construction with engineered ventilated upper Sidi heel counter High-density resin dialing system with Dyneema Carbon composite sole with stiffness 6 and engineered for durability sole inserts Specifications Cleat Bolt Pattern3-BoltClosureDialShoe Size (EU)40Gender/AgeMen'sColorBlackDefined ColorBlack