Castelli NANO FLEX 3G...
Unlock your full potential and push your performance to the next level - choose the Bontrager Circuit Road Cycling Shoe. It is both stiff and comfortable, making it the perfect choice for cyclists who want to tackle a variety of road rides without putting pressure on their feet. Compatibility with both 2-bolt and 3-bolt SPD cleats.
InForm Race profile for a slightly more comfortable fit, but optimized for high performance
Single BOA® L6 dial for a precise fit and to facilitate micro-adjustments
The Velcro strap on the forefoot ensures maximum adjustment for a better and more comfortable fit
The perforations on the synthetic mesh and the TPU upper ensure superior breathability
Bronze Series composite nylon sole
Stiffness index: 7 out of 14
Compatibility with 3-screw and 2-screw SPD cleats (2-screw fixing plate sold separately)
SPD: SL 3-bolt and SPD 2-bolt cleat compatibility
Includes Cleat Covers: No
Closure type: BOA
Fiber content: sole 67% Nylon 6/20% Glass fiber / 5% Carbon fiber / 5% Thermoplastic polyurethane / 3% Metal
Fiber content: upper 78% Thermoplastic polyurethane / 14% Polyurethane / 6% Mesh / 2% Nylon
Fiber Content: 100% Mesh Lining