Water Purification Drinking StrawiStraw is used for help in protection against waterborne bacteria and protozoa that are present in the drinking water of many countries.
Reduces up to 99.99999% of all waterborne bacteria, including Giardia and Cryptosporidium.
Reusable - filters up to 500 litres of water.
Filter - 0.1 micron.
Unlike water purification tablets, leaves no aftertaste.
only 20 pounds
http://www.istraw.co.uk/