Men's SR-1 Tempo Runner YGroup_sr-1-tempo-runner TYR’s L-1 allows for natural

TYR’s L-1 allows for natural foot movement and added power

the Valkyrie Speedworks runner is equipped with an anatomical toe box and the LaunchPX midsole that features a full length nylon plate

Its ergonomic design contours to the natural shape of your foot

- Surge NRG+ Foam enhanced with supercritical foam for ultimate response and durable support for any movement

a more upright torso

Men's SR-1 Tempo Runner YGroup_sr-1-tempo-runner TYR’s L-1 allows for naturalSpeed. Traction. Lightweight comfort. The SR 1 Tempo Runner is equipped with the latest in foam technology, Surge NRG+ enhanced with supercritical foam for ultimate comfort, response and durable support for any movement. This runner features a lightweight monomesh upper for unmatched breathability that's perfect for interval training, jogging, or walking. It's designed to keep your feet cool and comfortable throughout your exercise routine.