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CamelBak BlowFish Hydration Pack - 3L

As a defense against predators, the puffer fish fills its belly with water. As a defense against not having enough space for an extra layer (and thus hypothermia), the CamelBak BlowFish Hydration Pack expands its cargo volume. The water reservoir holds three liters of liquid for your long rides, and the expanding panel unzips in the main compartment to allow for an extra layer or snacks. If youre just out for a short run, zip the BlowFish up and you have a clean, low-profile pack. The mesh back panel improves ventilation so you stay cool and dry.