Looking to replace your icky bladder after you forgot to wash it? Or are you a thirsty adventurer who would like to refill less?Grab a replacement 2L or 3L bladder so that you can stay hydrated on the dance floor, on a hike, or at a theme park! This bladder is compatible will all versions of the lunchbox hydration pack, as well as previous hose replacements. Note that this is for the bladder only. Check out the Hydration System Replacement if you need an insulated hose and bite valve as well.