NAKED - Running Flask
With our 350ml/500 ml soft flask – Made by Hydrapak – you get even more world class performance out of your hydration system. Designed to maximize the ergonomics in our running vests, the low profile flask with 28mm cap and high flow bite valve shrinks as you consume your liquids reducing it’s mass and volume. it is the perfect companion for all ultralight Naked products.
Run with confidence knowing our flasks come with Hydrapak’s famous Beyond™ Lifetime Guarantee.
*Actual Product Design Might Vary Slightly From Picture Shown.
Before using, make sure to not cross thread cap while screwing on or over tighten cap. For best results, hand wash the flasks and tube kits with mild detergent in warm water prior to using for the first and do the same thing before each use. Do not wash in dishwasher. It's a good idea to occasionally lubricate the cap and flask threads with with small amount of Beeswax, Silicone or Glycerin based lubricants; be sure to wipe excess. When not in use keep cap loosely tightened on flask. If over time you notice your flask "yellowing" this is normal due to the materials used to make the flask flexible. Because this material is somewhat porous it can absorb elements that may be in tap drinking water and sports drinks' ingredients. This is normal and is certainly not unhealthy or dangerous. We recommend using Bottle Bright and following their instructions to renew and restore.