LifeStraw took the most popular outdoor water filtration device on the market and reimagined it for added versatility sustainability a better grip experience and updated design and colors. This ultra lightweight personal water filter straw is made from high performance premium sustainable materials it has no extra parts to keep track of and it boasts and enhanced flow rate for easy sipping. At 2 ounces and 5 years of safe water in the palm of your hand no backpack pocket emergency bag or glove compartment should be without one.