The Sawyer Personal Water Bottle Filter offers the highest level of filtration available, and the quality and assurance you can expect from Sawyer. The Hollow Fiber Membrane filter effectively removes bacteria such as Salmonella, Cholera and E Coli, as well as protozoa such as Giardia and Cryptosporidium, without adding harmful chemicals to the water. Sawyer water filters exceed EPA recommendations for removal rates. 0.1 micron hollow membrane filter has a removal rate of 7 log 99.99999 % of all bacteria and 6 log 99.99999% of all protozoa. Just fill the bottle with water and drink from the bottle. No pumping, no chemicals, no waiting, no worries. Includes 34 oz. durable water bottle and cap and 0.1 micron absolute hollow fiber membrane filter, 2 replacement drinking straws, cleaning syringe, cleaning and maintenance instructions. Weight 7.5 oz. Size: 11 x 3.