The SiS GO Isotonic Gel was the world’s first isotonic gel effectively delivering an easily digestible and quick supply of carbohydrate for energy during exercise. SiS GO Isotonic Gels are designed to be consumed without water meaning that you can ensure rapid delivery of carbohydrate to your muscles without the feelings of being bloated that can sometimes occur with over-drinking. 60ml gel packs. Isotonic formulation delivers energy fast. Convenient gel format. This great value gel pack contains 7 different flavours: 1x Go Isotonic Gel Apple. 1x Go Isotonic Gel Lemon and Lime. 1x Go Isotonic Gel Blackcurrent. 1x Go Isotonic Gel Orange. 1x Go Isotonic Gel Pineapple. 1x Go Isotonic Gel Pink Grapefruit. 1x Go Isotonic Gel Tropical.