*Free shipping on orders over $99

Free Shipping Policy

Free Shipping applies to all orders placed for $99 and above
(pre-tax value). Some restrictions apply:

  • Offer valid in the Lower 48 States only
  • Excludes Complete Bicycles, Framesets, and some other oversize items

Nutrition Gels

SIS GO Isotonic Energy Gel- Box of 30

Science in Sport (SiS) is a premium sports nutrition partner to several national cycling federations, such as the US and British cycling programs, as well as USA Triathlon and Team Ineos. Through rigorous lab and real world testing, and a commitment to clean products, SiS offers high-level supplemental nutritional support to endurance and competitive athletes across sports and athletics.

The GO Isotonic Energy Gel was the world's first isotonic gel effectively delivering an easily digestible and quick supply of carbohydrates for energy during exercise. The gel is designed to be consumed without water, minimizing the risk of being bloated that can sometimes occur with over-drinking while providing you with 22 grams of carbohydrates per gel.

Depleting your carbohydrate stores during exercise is one of the major causes of fatigue. Delivering additional carbohydrates during exercise is known to improve performance, race times and delay the onset of fatigue. The Isotonic formula allows the gel to empty from the stomach quickly as no fluid needs to be drawn into your stomach to dilute the gel, providing fast energy. GO Isotonic Energy Gels are highly practical and can easily be carried without the requirement for bulky bottles. Winner of the Queens award for enterprise, this innovative product continues to be seen at the forefront by endurance athletes. Use during endurance sessions and events to help avoid the dreaded bonk- energy crashing.


  • Isotonic gel effectively delivering an easily digestible and quick supply of carbohydrates
  • Truly isotonic formulation - no need for water
  • Minimizes the risk of bloating that can sometimes occur with over-drinking
  • 22 grams of rapidly absorbed carbohydrates per gel
  • Convenient easy-to-take format
  • Flavored Maltodextrin gel with added sweetener
  • Suitable for vegans
  • Informed Sport Registered: The complete SiS product range is developed using a world-class independent lab approach to banned substance testing, providing assurance for athletes
  • 30 individual 60ml gels per pack
  • Sold as: Box of 30
  • Flavors: Tutti Fruitti, Lemon & Lime, Cherry, Tropical, Orange