RD-1 Runner combines a Surge NRG Foam midsole with a durable engineered mesh upper to provide unparallelled comfort and response, while the 10mm heel-to-toe drop maintains support and accelerates power. Designed to complement a runner's natural movement, TYR's RD-1 enhances stride and speed so you can go the distance.

Technology
-Surge NRG Foam, a responsive and durable base that supports and reacts to a runner's energy output.

Features
- Engineered mesh upper
- Reinforced side support guards
- Molded sockliner
- 10mm heel-to-toe drop
- 4mm grooved outsole 

Material
-100% polyester engineered mesh upper
-EVA Surge NRG midsole foam
-2 mm EVA Strobel
-Rubber outsole

Sizing Chart