Ultraspire UltraFlask 550 Hybrid Bottle cf-size-7-5 the Brooks Source men's running

the Brooks Source men's running tight delivers stretch

Offset: 12 mm

Weighing less than 3 oz

Low-profile custom quick-release buckle

and 360-degree reflectivity to optimize performance and safety

Ultraspire UltraFlask 550 Hybrid Bottle cf-size-7-5 the Brooks Source men's runningUltrAspire introduces yet another milestone in hydration history: This great feeling, easy stowing 550 mL bottle is a hybrid between a hard bottle and a soft flask! The lightweight super squeezable UltraFlask stands up on its own, is fillable and easy to clean, and has high flow and fast recharge. It is soft, flat and stable against the body and is easily accessed and returned to a vest pocket or a waistpack even when it's empty. The UltraFlask 550