"When you know you'll need fuel, don't mess with a pocket full of empty GU packs! The Flask holds one Flask Filler or up to 5 single packs of GU Energy Gel, and shuts tight to keep the GU inside the Flask and not inside your pocket."
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"When you know you'll need fuel, don't mess with a pocket full of empty GU packs! The Flask holds one Flask Filler or up to 5 single packs of GU Energy Gel, and shuts tight to keep the GU inside the Flask and not inside your pocket.".
