Science in Sport, leaders in sports nutrition, introduce the world's first isotonic energy gel. Each handy palm size sachet contains 25g of isotonic carbohydrate energy. That's enough energy for 20 to 30 minutes of exercise, and because it's isotonic, it will still deliver energy without the need for extra water. What's more the unique gel structure goes down easily, so you don't get that sticky throat feeling associated with other gels. Ultimate Energy Boost Start your race on full power Isotonic for on the move energy Gets you out of Trouble and Back Home Easy to Use and Digest