Hydrapak Hydraflex Tube

You're not one to stay still for long. Whether you're cruising down the mountain on a bike or navigating technical trails by foot, let the Hydraflex Tube by HydraPak help quench your thirst. Designed to keep your water tasting fresh, this tube is equipped with a Blaster valve to keep the water flowing, but only when you want it to thanks to the twist shut off feature.