Fizik R4B Donna Boa Carbon

Fizik's R4B Donna features Volume Control Technology and the Extended Power Strap for quick and easy adjustment to create perfect fit for comfort and performance.

- Materials: Microtex laser perforated
- Outsole: Injected Composite Carbon Vented
- Closure System: Boa IP1-A and Micro Straps
- Insole: Fizik Cycling Insole