LifeStraw contains no chemicals, no batteries and no moving parts to wear out.
LifeStraw exceeds international standards for water filtration in independent testing.
LifeStraw has been used around the world under extreme conditions for humanitarian relief.
While you can drink directly from puddles or streams, it's easiest to scoop water with a wide-mouthed water bottle and then drink from it using the LifeStraw.
When new, the filter membrane is very dry. Uncap the top and bottom caps and insert the base of the straw into the contaminated water. Let it sit for 30 seconds for water to creep up the membrane, then take 5 strong sucks to get the water flowing.
When done drinking, blow a breath of air back down into the LifeStraw to purge the water out, shake, then recap.
If you drink from murky water and the water flow stops, blow back into it to purge the water and mud from the filter. When you return home from a hiking trip, drink some tap water with the LifeStraw, purge the filter by blowing back into it, then leave it to dry with the caps off.