Features:
- Shock Shield® diffuses heel strike impact to minimize fatigue
- NITRO™ stabilizing frame for support with forefoot flexibility
- Removable NITRO™ insole for shock absorption and rebound
- Duratread™ sole with rider-tested traction zones
- Padded collar and tongue
- Front lace closure with ankle flexion notches
- Locking speed lace hooks with lace lock at top