All you need, all day. Really. Tailwind Endurance Fuel was created by endurance athletes in Durango, CO to overcome the nutrition problems faced by endurance athletes. Tailwind combines complete fuel, hydration, and electrolytes in a mild, clean tasting drink that won't turn your stomach into a brick. Tailwind mixes clear - no artificial ingredients - and is hydration-pack friendly, making cleaning easy without leaving any residue. Simply toss it in your pack or bottle, shake, and GO!