Features & details Hollow Fibre ADVANCED WATER FILTRATION. Protects against, microplastics, chlorine, organic chemical matter and sand, dirt, cloudiness and more; improves taste MADE TO LAST. Long-lasting membrane microfilter lasts up to 4,000 liters and the activated carbon filter lasts up to 100 liters of water with proper use and maintenance RIGOROUSLY TESTED. Reusable, durable and BPA-free, independently lab tested to meet protocols established by the US Environmental Protection Agency (EPA) and NSF International/ANSI THOUGHTFUL AND SUSTAINABLE DESIGN. 22 oz capacity. Every fill avoids single use plastic bottled water! Easy to use, easy to clean bottle and cap are dishwasher safe once the filter is removed.