- Leak-proof design with no corners
- High-flow bite valve
- Easy-open cap with ribbed grip for sweaty hands
- Mid-size cap (4cm dia) for easy filling and avoids excess bulk
- Made from durable, non-toxic, recyclable BPE-free polyurethane
We recommend washing the flask and cap thoroughly (including soaking with baking soda) before first use, and also rinsing out sports drink after each run.
Our Sherpa Flasks come with a leak-proof guarantee. If you have any issues within 6 months of purchase, please return with proof of purchase for an exchange.