Fizik Terra Powerstrap X4 Gravel Shoe。Fizik Terra Powerstrap X4 Gravel Cycling Shoes he Fizik Terra Powerstrap X4 is a versatile gravel cycling shoe, designed for riders who venture beyond paved roads. With its Powerstrap Velcro closure system for a snug fit and the X4 outsole offering a balance of stiffness and grip, this shoe is perfect for mixed-terrain adventures. Powerstrap Closure System – A foot-wrapping hook-and -loop design for a secure, customized fit Dual Adjustable Straps – Instep and midfoot straps allow for independent adjustment and compression X4 Outsole – Nylon construction with targeted stiffness (index 6) and rubber tread for grip on mixed surfaces Optimized for Gravel & Mixed Terrain – Provides pedaling efficiency with comfort for long rides Stiffness Index: 6 Color: Anthracite/Grape US Men\'s Size 7 UK 6 EUR 39.5 Preowned. Good used condition