Always water at hand The Thule UpTake 4L hydration pack is a light and fast water carrier that is perfect for intensive rides of about 2-5 hours. This practical bag has a water reservoir with a 2.5 liter drinking hose. This means you always have enough water on hand during your intensive ride. Plenty of storage space In addition to the 2.5 liter water tank, the UpTake 4L hydration pack has 4 liters of storage space. Taking clothes, snacks and other accessories with you will not be a problem. There are side pockets at the bottom of the bag, so that you can quickly and easily access your luggage while cycling.