LifeStraw Go - A water filtering bottle with 0.2 micron filter size. LifeStraw filtering technology has been tested and proven in disaster areas such as the Haiti earthquake and Pakistan floods. Just fill with the best water you can find and you can start to drink immediately through the straw at the top. - Chemical free - BPA free - No pumping needed - Highly compact - Filter life: approx. 4000 liters - Filters 99.9% of protozoa (Giardia lamblia and Cryptosporidium parvum) - Filters 99.9999% bacteria (escherichia coli, campylobakteeri, vibrio cholera, pseudomonas aeruginosa, shigella, salmonella) Don't allow your filter to freeze. Water expands as it freezes and may break the filter element. For each LifeStraw sold, money is forwarded to teh FollowtheLiters.com project. The sum given for each straw is enough to secure clean drinking water for one child in Africa for the entire school year. *Note!* A water filter or purifier tablets cannot remove the toxins created