Women's DropZero Barefoot Trainer Size (US):16.5 This runner features a lightweight

This runner features a lightweight monomesh upper for unmatched breathability that's perfect for interval training

Lab tested to boost force production and power output by 25%

The TYRTAC™ rubber outsole keeps you planted through every pull

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

The SR-1 Tempo Runner is equipped with the latest in foam technology

Women's DropZero Barefoot Trainer Size (US):16.5 This runner features a lightweightThe TYR Men's DropZero Barefoot Lace Trainer delivers unparalleled flexibility, allowing your feet to move naturally and enhance your connection with any surface during training. Designed to match the natural contours of your feet, this barefoot trainer ensures comfort and agility. The ultra thin TYRTac rubber outsole offers exceptional ground feedback and superior traction across all surfaces. Featuring a secure lockdown lace system, the DropZero