The Vango Sprint 3 Hydration Pack is a compact pack that has a total capacity of 3 litres and comes with a 2 litre hydration pack making it an ideal and comfortable way to carry your much needed fluids with you when you are hiking running or cycling With its lightweight yet breathable AirMesh back system and super-lightweight and ventilated mesh straps this pack offers an extremely comfortable wear while the sternum strap and the detachable waist strap mean that you can adjust the pack to ensure it is the most comfortable and secure fit for you After all the last thing you want while running is your bag bouncing around The Vango Sprint 3 s 2 Litre hydration pack is accessible through a Velcro opening at the top of the back system this leaves room in the front of the bag for a zipped front pocket with a key clip inside ideal for your essentials some bungee lashing on the front for stuffing a rain jacket in and a loop to attach a light to making this a fantastic companion for running cycling and hiking