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COMING WITH CLEANING KIT: including a water bladder and cleaning kit which contains 1* flexible snake brush for drinking tube cleaning, 1* smaller brush for mouth piece cleaning, 1* bigger brush for bladder cleaning, and 1* collapsible frame for bladder air drying FDA APPROVED AND BPA FREE: this backpack reservoir is made by food-grade safe non-toxic TPU material, 100% BAP-free, provide for a safe and environmentally friendly hydration experience LEAKPROOF BITE VALVE: the rubber mouth piece has an spin button shutoff valve to prevent leaking when not drinking, it also has a soft suction nozzle on it to provide fast water flow