Powerbar powergel hydro max gels 67ml x 24 for intense training or competition you should refuel during exercise with up to 90g carbohydrates per hour depending on intensity and duration powergel hydro delivers carbohydrates in a scientifically developed 21 ratio of glucose and fructose sources they call c2max dual source carb mix powergel hydro is ideal for all sports people because they are compact in size and easy to swallow without drinking fluid directly afterwards features c2max dual