Hydrapak Ultraflask 600A 600ml soft-flask which is comes with a design that conforms to any pocket, hydration vest, belt, or can be comfortably carried in your hand and the flask collapses down as it empties for easy transportation. Meanwhile, the Ultraflask also comes with an anti-abrasive design with RF welded seams. With a versatile design the flask comes with two different cap sets: one with removable bite valve directly mounted to the cap and the other an adjustable drinking tube that can be cut to a custom length. The high-flow bite valve auto-seals after each sip which prevents leakage on the go.FeaturesCan be frozen or filled with hot waterUltra-durable, abrasion resistantRF welded seamsLarge 42mm opening for easy filling and cleaningIncludes two cap setsHigh-flow bite valve auto-seals after each sipFlexible design that shrinks as you drinkSoft material that conforms to any pocketTop-rack dishwasher safeCompletely free from BPA and PVCThermoplastic Polyurethane, Silicone and HDPE construction600ml volumeWeighs 47gDimensions: 230mm x 80mmBuy Hydrapak Water Bottles from Chain Reaction Cycles, the World’s Largest Online Bike Store.