With its excellent adaptable fit, proven comfort, great looks and highly efficient power transmission, the Aria R3 racing shoe offers superior performance. The Aria R3 features Enhanced Volume Control, which consists of two micro-adjustable Boa IP1-B twist locks with strong and lightweight steel-coated nylon cords and lightweight plastic cord guides. The closure system pulls the supple and protective Microtex upper material around the foot so that it fits snugly and does not cause seam rubbing or pressure points. Laser perforated and 1.2mm thick, it is ideal for the whole season offering a combination of light weight, breathability and flexibility, robustness and support. The Aria R3's Uni Direction Full Carbon outsole is lightweight and sideways stiff for ultimate power transmission, while the inconspicuous tread pattern in the front and removable double tread pattern at the heel provide support away from the wheel. Featuring an advanced ventilation system for riding comfort and performance in every situation and supported by the subtly padded structure of the fi'zi:k Cycling Insole and the supporting heel cap, the Aria R3, like all fi'zi:k performance cycling shoes, is the result of fi'zi:k's development program that incorporates the experience of world class athletes to create the best possible footwear for you. - Purpose: Racing bike / Cyclocross - Season: All year round - Size information: Size is normal - Fit: normal cut Weight - Measured size: 42.5 - Weight per pair: 486 g Material Shoe - Type Outsole: hard - Upper: Microtex Laser perforated - Lining: fi'zi:k Cycling Insole - Outsole: UD Carbon - Features: Aero Equipment Shoe - Type Locking system: Twist lock - Footbed/Insole: removable insole - Sole: breathable sole - Locking system: 2 x Boa IP1-B System Pedalsystems - Type of cycling shoe: for click pedals Racing bike - Cleatsmontage: for 3-hole Cleats