Filter inside bottle removes odor, sediment, heavy metals, and 99.9% of protozoa, viruses, and bacteria for clean, great tasting water, plus the filter is removable and replaceable. Great bottle for outdoor use with flip-up drinking spout that is built into the carry handle made of solid construction which can be easy attached with a carabiner. In the long term this bottle is cheaper than purchasing filtered bottled water, and reduces the production and waste that used filtered bottled water creates. Reduce | Reuse | Recycle BPA Free. Made in the USA.