Stay hydrated with the patent pending Speedfil F2 system.
- Works with any Specialized or Trek bottles and includes a 21oz specialized bottle
- Easily refillable on the fly
- Dual splash resistant opening allows for fast, on the fly refills with minimal splash
- Simple mounting and cleaning
- NOTE: Polar and Camelbak bottles do NOT work due to a different sized opening
- The bite valve and tubing keep fluid on demand without sucking up air for each drink
- Works with any standard cage mounted on the down tube