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What we think
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, and reuse it! Your trail buddies and the planet thank you!
How We Use It
We use the GU Flask on any long outing. Our favorite time to use this product is when we are on the mountain skiing! The Gu Flask keeps our gels from freezing on even the coldest days.