Emergency or back-up filter and straw for traveling, hiking and fishing that weighs less than 1 oz. The filter can be used to drink from any bottle or cup or directly from water sources. Features a new and more durable straw and wider housing with greater durability. Removes more than99.9% of Cryptosporidium and Giardia. Activated carbon filter reduces waterborne chemicals, improves taste and eliminates odors. Removes dirt and sediment from water. Filters up to 30 gallons of water.