Upgraded for this season! Modeled after the unique holsters that made the Nathan Speed Series so popular, the Propeller 2.0 allows lightning-quick removal and replacement of a 5 oz. Flask –– with one hand. Replace a standard bike cage or attach anywhere on bike. The Propeller 2.0 now utilizes the Race Cap and incorporates a silicone base to prevent sliding on a bike frame.

FEATURES:
-Unique molded holster for quick, one-handed Flask access
5 oz. Nutrition Flask with Race Cap
-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
-Universal attachment plate: screws in place of bike cage or attach anywhere on bike with Velcro straps or zip ties
-Silicone base ensures the propeller won't slide on frame or damage bike