Bota's unique use of Nalgene All Terrain Bottles and slip-in filter makes this a great addition to your filtration line-up. Safe for any U. S. stream, river, or pond. Removes giardia, crypto, sediments, chlorine, lead taste and odor. Exceeds EPA guidelines. Approximately 200 refills per filter. Easy to change filter. Unconditional guarantee. Includes bottle and filter.