The folks at GU teamed up with Hydrapak to design a customized soft-flask with a high-flow nozzle to make fueling for long efforts more convenient and less sticky. The flask holds 5 servings of GU Energy Gel and includes marks on the back to measure your fuel. Fill up your GU Energy Gel Flask from the new 15 serving pouches, fuel with it,
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25 ratings
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So much better than carrying multiple separate gels!
Just tried this flask today and it was so much easier on the bike than opening multiple gel packs which can be hard to tear open sometimes. Easy opening with teeth and only need to carry one flask for 3-4 gels.
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Lynne · 24 days ago
Easy to use
I got this for a race that doesn’t allow single use Gu packets. I have been loading 3 of the liquid Gu into these. This works well other than not having a suction lid like a water flask would, so it’s easy to spill and hard to get all the air out to keep it from sloshing. The flip side of that is that the wide opening makes it easy to get a lot of gel down quickly.
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Rebecca · August 27, 2026
Perfect container that stays closed and eliminates waste
