Pristine® Straw is a sleek, ultra-light filtration straw that converts to a pump!  Treat lake, river, stream, or even tap water while hiking, camping, or travelling, but also great for your emergency preparedness kit!  The pump feature means one straw can treat water for multiple people.  Pristine® Straw attaches to a standard pop bottle or tubing, or use as a typical straw.  The ultrafiltration (UF) membrane removes >99.99999% of bacteria and >99.99% of cysts/parasites, including Giardia and Cryptosporidium, and can filter up to 1000 litres of water.