Hydrapak Stash 1L Flexible Water Bottle

The Stash Flexible Bottles from HydraPack are the solution for lightweight backpackers who need the lightest and most versatile gear possible. This vessel is capable of completely flattening itself in your pack when it's not being used, but expands whenever you need to carry some good old H2O. This system saves considerable weight and space when compared to rigid water bottles.