The light, flexible, soft 250 ml Flask is your practical companion to always stay well hydrated on a long tour. The soft flask is made from BPA-free and PVC-free materials and holds a quarter-liter. It is the perfect fluid dispenser for long mountain runs and tours. You always have fluids quickly accessible and can immediately quench your thirst with the practical bite valve. The size of the flask also shrinks automatically as your drink. Meaning you don’t get that annoying sloshing back and forth when there is less in the bottle.