Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

Features Removes 99.9% of Waterborne Bacteria (E. coli and Salmonella etc)， Waterborne Protozoa (Giardia and Cryptosporidium)Removes 99.9% of Hervey Metals (Lead， Mercury， Cadmium)， 99.9% ChlorinePreserves beneficial minerals in water such as Calcium， Potassium and MagnesiumFiltration capacity 1000 Liters = 2000 plastic bottles savedUF filter can be cleaned. Cleaning can help to extend its lifespan.Replaceable filter cartridges. No need to throw away the whole systemABS material， Impact resistant， Lightweight 98g， Compact and BPA freeTriple Filtration processStage 1: PP Pre-filter mesh blocks sand， rust， silt， worms and the other large particles that may clog the system.Stage 2: UF filter filtering down to 0.05 micron. It is effective against protozoa (Cryptosporidium， Giardia) and bacteria (Campylobacter， Salmonella， Shigella， E. coli). Delivers you 1000 Liters clean drinking water. And UF membrane can be back flushed to extend lifespan. L600 UF filter outside-in configuration maximizes the ease of backwashing. UF membrane performance can maintain much more than 1000Liters if clearing is appropriate.Stage 3: Carbon Fiber Filter strongly removes unpleasant taste， odors and residual chlorine in raw water， even heavy metals (Lead， Mercury， and Cadmium) thanks to the large surface area of carbon fiber.ow to use Three kinds of operation method can fit to different environments and needs. 1. Bottle Filtration: using with threaded 28mm standard PET/ soda bottle like Coca-Cola bottle2. Directly Filtration: drink direct from renewable natural fresh water sources by simply sucking through the straw.3. Gravity Filtration: connecting with a water bag. Take use of gravity to purify the dirty water. Many people can drink great-tasting filtered water at the same time.