GSI OUTDOORS Boulder Flask

Your favorite beverage can now go anywhere in the Boulder Flask. Includes graduations for measuring and can take any fall with the sleek bumper flask.

- Shatter-resistant, copolyester resin body and grippy, silicone bumper mean this flask can go anywhere
- Wide mouth makes for easy filling, pouring and drinking
- Hinged top with silicone grip is easy to open and impossible to misplace
- Convenient molded graduation marks
- BPA Free
- Material: Copolyester, Silicone