LifeStraw Go water bottle in blue with a built-in filter. Perfect for clean hydration for hiking, camping, backpacking & traveling. Never used! Open box. Original packaging. 650 ml capacity. Bisphenol A (BPA) Free ADVANCED WATER FILTRATION. Protects against microplastics, chlorine, organic chemical matter & dirt, cloudiness &more MADE TO LAST. Long-lasting membrane microfilter lasts up to 4,000 liters. Activated carbon filter lasts up to 100 liters of water w/ proper use & maintenance RIGOROUSLY TESTED. Reusable, durable & independently lab tested to meet protocols established by the EPA & NSF International/ANSI THOUGHTFUL & SUSTAINABLE DESIGN. Every fill avoids single use plastic bottled water! Bottle & cap are dishwasher safe once filter is removed