Science In Sport 7 Pack Variety Isotonic Gels 60ml Science in Sport delivering superior sports nutrition, so you can train harder, race faster and recover quicker. We designed the world's first isotonic energy gel to be clean in the mouth and easy to digest. Flavoured carbohydrate gel withadded sweetener. Consume up to 3 sachets per 60 minutes during exercise as required. SiS GO Gels do not need to be consumed with water to be effective.