Vapur Microfilter Bottle Super Cap--Flip Cap. Tough Seal. Easy Open. Durable 3-ply construction Dishwasher safe, BPA-free Removes 99.9999% of bacteria (such as salmonella, cholera and E. coli) and 99.9% of protozoa (including Cryptosporidium and Giardia) Matte Finish FILTRATION - This lightweight chemical-free filtration system removes 99.9999% of water borne bacteria (like Salmonella, Cholera, and E.coli) and 99.9% of protozoa (such as Cryptosporidium and Giardia) SAFE & EASY - No chemicals. No pumping. No batteries. No waiting. TECHNOLOGY - Hollow Fiber Membrane Technology with an absolute pore size of 0.2 microns SMART STOP FEATURE - This filter includes an auto stop feature; once the pores of the membrane are filled water will no longer be able to pass through ULTRA LIGHTWEIGHT - Together the 1L bottle and filter weigh just 2.7 ounces