Platypus HyperFlow Bite Valve
Here's what other sites are saying:
Platypus HyperFlow Bite Valve The Hyperflow Bite Valve by Platypus features the fastest flow rate on the market and is soft, drip free, and easy to hold in the mouth.
This improved bite valve has twice the thirst-satisfying flow of the original valve. It's super-soft, drip-free and easy to hold in the mouth.
Replacement Bite Valve for the Platypus Hydration System.
For the smoothest flow around, the Platypus HyperFlow bite valve features the fastest flow rate on the market and is soft, drip-free. Easy to hold in your mouth
- Tahoe Mountain Sports