Crystal Light On-The-Go Mix Sticks offer a low-calorie beverage alternative. Simply pour the contents of the stick into a 20 oz. bottle of water or a glass with 2-1/2 cups of water for a refreshing treat. Sticks of sugar-free crystals are a simple way to enjoy hydration on-the-go.Crystal Light On-The-Go Mix Sticks offer a low-calorie beverage alternative. Simply pour the contents of the stick into a 20 oz. bottle of water or a glass with 2-1/2 cups of water for a refreshing treat. Sticks of sugar-free crystals are a simple way to enjoy hydration on-the-go.