The Replacement Filter for Aqua Vessel filtration bottles will filter up to 100 gallons of water, and it's certified to remove up to 99.9% of Giardia and Cryptosporidium. It also reduces microscopic pathogens, heavy metals, dirts, and sediments. Use it for tap water, in streams when you're hiking or camping, or when you're traveling abroad. With the Aqua Vessel, you'll never need to buy another plastic bottle of water again. Straws not included.