Womens R1 Running Shoe Adult Shoe Size:UK 7 / US 9 / EU 40.5 / CM 26 The best-selling hydration vest is

The best-selling hydration vest is back with a new design for enhanced stability

giving you ultimate control for big moments

echoing the city's iconic structures

a heel strap and leather on the sides stabilise the fit

train and race in optimum conditions

Womens R1 Running Shoe Adult Shoe Size:UK 7 / US 9 / EU 40.5 / CM 26 The best-selling hydration vest isThis product received the American Podiatric Medical Association (APMA) Seal of Acceptance, awarded to products found by the Association to promote good foot health. Tune In, Stride Out In the relentless pursuit of distance, ultrarunners often encounter swollen feet. With the R1, your toes can relax and enjoy the ride thanks to our wide toe box and broad platform, and the TUNEDFIT Dual Lacing System offers customizable fit for the forefoot and midfoot