"The easiest, most convenient waterbottle ever. Drink without tilting the bottle, with water moving at a consistent, steady flow. This achieved by a combination of the internal straw and triple valve system. The bottle also comes with a Hydrapak drink tube extension, which enables you use the water bottle without taking off your fullface helmet. The water triple-valve and upright drinking system was designed with safety in mind, helping you to keep your eyes on the trail while drinking"