Is the SiS GO Isotonic Energy Gel the right choice for on-bike fueling?

The SiS GO Isotonic Energy Gel is the world's first isotonic energy gel, delivering 22g of fast-absorbing carbohydrates from maltodextrin in a format designed to be consumed without water. The isotonic formula matches your body's natural fluid balance, so the gel empties from the stomach quickly and gets to work immediately without drawing fluid into your gut. No bloating, no water timing, no mess: just clean, fast carbohydrate delivery when you need it most. Science in Sport developed this gel in 2000, and it remains the go-to choice for elite endurance athletes worldwide, including Grand Tour winners and Olympic medallists.

Each 60ml gel provides 22g of carbohydrates with less than 1g of sugar, giving you sustained energy without a crash. The light, liquid consistency is easy to take on the move: no thick gel to choke down mid-climb. Aim for 1 to 3 gels per hour to hit 60 to 90g of carbohydrate intake during exercise lasting 90 minutes or more. Informed Sport certified, meaning every batch is tested against the WADA banned substances list. This Box of 6 is the perfect way to test a flavor or stock up before a single race weekend without committing to a full case.