The original GO Energy Gels by Science in Sport – but with a kick.
In case you don’t know, the GO was key in changing the game. They effectively deliver an easily digestible and quick supply of carbohydrate.
The SiS Caffeine Gel is based on...
Reviews
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529 ratings
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Amazing
It’s a big gel, not going to lie! But they have more water in them which means you can skip the gulp of water and stay in the draft! I used these with Go Far for an 89 mile cycling race. The combination was fantastic! I never needed to stop- feet clipped in from start to finish and felt great!
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Anna · August 25, 2026
Love this boosted energy !
I like having this boost of caffeine during the last 2 miles of my triathlon run. The orange flavor is quite tasty (surprised me too!) And it really keeps me smiling and energized through the finish.
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CONNIE · August 21, 2026
My pick me up
Been a fan of SAS for years. The double espresso is just what the doctor ordered when I need that little caffeine kick.