Hydration while riding. I used it in the past then switched to some "newer" brands because it didn't easily disolve. I went back to it when I wanted to order more of the Hammer Gel in the larger container to fill my flask. Upon my return I realized how much the flavor tastes artificial and I won't reorder. On the plus side it now disolves well.
The only sports drink that actually makes a noticeable difference 30 minutes after you drink it. If you end up with a headache from working outdoors in the heat, chances are you are dehydrated and you drink this 30 minutes later your headache will be gone but dont wait to drink some till that happens. Great stuff, get you some!