Life Straw is a tube about 9.25 inches (23.5 centimeters) long and about an inch (2.5 centimeters). The outer shell of the unit is made of a durable plastic, with a string attached so users can wear it around their necks. the product incorporates mechanical filtration. When you suck on your Life Straw, water is forced through hollow fibers, which contain pores less than 0.2 microns across. Thus, a microfiltration device. Any dirt, bacteria or parasites are trapped in the fibers, while the clean water passes through. When you're done drinking, you simply blow air out the straw to clear the filter. You can down a quart of water in eight minutes using the Life Straw.
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