One port connects directly to the inside of the bottle lid and the other port connects to a straw.
Use the EcoVessel filter to protect against parasites in streams when you're hiking or camping and to improve the taste and odor of plain tap water.
- Filters 100+ gallons of water
- Tested in accordance with NSF Protocols 42 and 53
- Removes over 99.9% of giardia and cryptosporidium*
- Removes chlorine, bad taste and odors
- Filter made in the USA
Please note that on first use, water may be difficult to draw through the filter. Once water is pulled through the filter, you may notice a black carbon residue in your water. This water is completely harmless and will only last for the first 5 or 6 sips. It can be discarded into a sink or other receptacle.