Media only screen and max width 400px desk display none media only screen and min width 401px mob display none the sis go caffeine gels builds on the established science of the go isotonic gels by not only delivering a rapid supply of easily digestible carbohydrates 215 grams per gel for energy but also providing 75 mg of caffeine per gel the addition of caffeine has been repeatedly shown by sport scientists to improve performance by providing both a physical