The Nathan Propeller 2.0 with Race Cap allows lightning-quick removal and replacement of a 5 ounce gel flask with one hand.

Race Cap with high-flow, one-way valve opens and closes automatically and offers a quick shot of gel. No need for intense squeezing or sucking.

Attach almost anywhere on bike with Velcro straps, or replaces a standard bike cage. Silicone base ensures the propeller won’t slide on frame or damage bike.