~Precision says~ 

Our range of fuel makes it easy to hit those numbers by telling you how much carbohydrate is in each serving right on the front of the packaging. No complicated nutritional tables to decipher, zero guesswork.

The Carb Only Drink Mix is easier to take in when you’re breathing hard (as there's no chewing involved!) and it's ideal when you need to keep your hands free. It's also useful if you have a nervous stomach before races and struggle to get solid calories in.