Some training runs are meant to push you past your comfort zone

climbing or biking for warmth and comfort

The 7-spike configuration is designed specifically to provide a powerful grip for events 400m and shorter

This core makes no performance concessions in its quest to be ultra-light

Lightweight solid rubber outsole

New Balance Women's FuelCell Shift TR *SALE* Trekking Poles Some training runs are meantMade to help boost your agility training, our FuelCell Shift TR features a springy FuelCell midsole for an ultra responsive and comfortable ride through high intensity drills. These innovative women's training shoes also feature a state of the art FitWeave Lite upper with no sew overlays for a lightweight feel that delivers a supportive, locked in fit. FuelCell foam delivers a propulsive feel to help drive you forward FitWeave Lite Upper features no