On Running Unisex Ultra Vest 5L - Black Colour:Black  The performance running T-shirt

 The performance running T-shirt for racing

- Fits waist size 25″ through 47″

32% polyester

- 4 loops for energy gels

- Bio-available active ingredients

On Running Unisex Ultra Vest 5L - Black Colour:Black  The performance running T-shirtA lightweight, 5 liter trail running vest for short medium distances. Includes a built in hydration system and customizable fit. FEATURES: Tested by the best With a 5 liter capacity, this high performance vest was built for shorter distances. Tested and trialed by our elite team of trail athletes, its thoughtful, minimalist design ensures a seamless experience on any trail, whether racing, training or chasing the high. Optimized for stability