The award-winning Base Camp Pro foldable system is a step up from its little brother, the Gravity Camp, with 4 more liters of capacity. But you get the same ease of filtering water for a group: Hang, fill, start dinner and, before you know it, a flow rate of up to 2 liters per minute (thanks to the Ultra Flow Filter(TM)) has filled the bag with reliably safe, clean water. Maintain the easy-to-clean filter protector to treat up to 1,500 liters of water sans pumping. Features: - Dimensions (in): 11 x 3 x 6 - Output: 2 liters/min - AntiClog Technology with 0.2 micron glassfiber - Weight 12 oz - Filter treats up to 1500 liters of water - Effective against microorganisms - Suitable for groups of 10 or more - Suitable for cloudy water - For daily or very frequent use - Lightweight and portable for on-the-go adventures