The SiS GO Isotonic Energy Gel was the world's first isotonic gel and remains the go-to fuel for riders at every level, from weekend bunch rides to Grand Tours. It suits anyone who wants clean, fast energy mid-ride without needing to wash it down. Each 60ml gel carries 22g of fast-acting carbohydrate in an isotonic formula, which means it matches your body's own fluid concentration and empties from the stomach quickly. That lets you take it without water and without the thick, syrupy texture of conventional gels. Take 1 gel every 20 to 30 minutes on rides over 90 minutes to keep carbohydrate stores topped up and hold off the bonk. Key features 22g of carbohydrate per 60ml gel Isotonic formula, no water needed Light texture that is easy to take at intensity Vegan friendly Informed Sport certified, so it is safe for tested athletes Practise your fuelling in training before race day. Grab a handful for the back pocket; they are the cheapest speed you will buy.