The Life straw works as a easy to use water filtration system can easily clean any water if you suck into it then it by pushes the water through a 0.2 micron hole that filtrates any bacteria and dirt from passing into your mouth. The normal life straw can filter up to 1000 liters before needing replacement while the family version can filter 18,000 liters before needing replacement meaning it can filter a families water for years. 

The Life straw is a improvement to other filtration systems due to being one of the cheaper options on the market for only 20 bucks and can last over a year and is quick to use and available  to almost every person on the world. With the family version it can even filter diseases meaning it is completely safe to drink. Un like of filtration methods which can take over an hour to process water meaning in a dire situation it would be far safer to use the life straw