Caffeinated Endurance Fuel 50 SRV Bag Raspberry bladders capable of keeping ice for

capable of keeping ice for days

We offer a 365-day warranty across our entire footwear line

so they're puncture and rust-resistant

dry™ waterproof insert with an Empel DWR on the shell

Caffeinated Endurance Fuel 50 SRV Bag Raspberry bladders capable of keeping ice forCaffeinated Tailwind meets all your calorie, hydration, and electrolyte needs just like you'd expect, plus it adds 35mg of caffeine per 100 calories. Caffeine is proven to significantly enhance high intensity and endurance performance. Usage is similar to regular Tailwind except that we recommend limiting continuous use to 6 hours or less to avoid building up a high concentration. Each scoop contains 100 calories and 35mg of caffeine. For endurance