CamelBak Groove Filtering Water Bottle, 0.6 L, Waterfall Turns tap water into fresh, great-tasting water anywhere you go Sustainable, plant-based filter lasts about 3 months or 48 gallons (180L) of water Easy to refill and easy to use bottle with a filter built into the straw Easy to carry: Integrated loop handle makes it easy to clip a carabiner or carry with the crook of a finger CamelBak Got Your Bak Guarantee: If we build it, we'll Bak it with our lifetime guarantee