Flexible water bladder with an integrated hydration tube from Source. It is made from special non-toxic plastic that does not alter the taste of the water and has a widepack design that makes it easy to fill even with ice cubes and facilitates cleaning and draining thanks to the large opening at the top of the bladder. Additionally, it has a large filling opening from the top of the bladder for greater flexibility in use and has a capacity of 3 L.