Clean water just got easier with the LifeStraw Universal. This uniquely designed filter allows you to turn almost any of your favorite water bottles into a water bottle filter. Thanks to the LifeStraw Universal, you'll never have to drink unfiltered water again. PRODUCT FEATURE: Replaceable carbon capsule reduces chlorine, bad taste and odor, as well as organic chemical matter like pesticides, herbicides, and VOCs Carbon capsule lasts up to 100 litres (25 gallons) Exceeds NSF42 standards for chlorine removal and meets US EPA drinking water standards Made of recyclable materials Wide cap outer diameter: 2.5 Standard cap inner diameter: 1.7 Weight (including filter): 3.3 oz All materials are US FDA approved, food grade silicon and Polysulfone & ABS.