500ml Soft Flask

Our lightweight, portable soft flask is ideal for trail running and swimrun.

• Weighs only 29 grams!
• Fast-flow bite valve that's easy on your teeth
• Shrinks while you drink to eliminate 'sloshing'
• Fill marks so you can easily mix up drinks to your needs
• BPA/PVC free, will not taint taste
• Can be compressed down for easy storage