When you're on the run, UltraFlask is ideal for quick hydration straight fromthe belt or vest. It shrinks as you drink to minimize water movement and it can be used with or without the tube. Ultra light weight, ultra useful.
>>Soft material conforms to any pocket
>>Ideal for hydration vest, belt or pack pockets
>>Shrinks as you drink, reducing water movement
>>4.2 cm cap with removable drink tube and bite valve
>>Use with or without tube (bite valve can be mounted directly to cap)
>>Can be frozen or filled with hot water (max temp 60° C / 140° F)
>>100% BPA & PVC free