Camelbak Groove Stainless 0.6L Bottle Plant-based Filter -Turns tap water into freshly filtered water. Sustainable, plant-based filter - Lasts about 3 months or 48 gallons (180L) of water. Easy refill - And easy to use bottle with a filter built into the straw. Durable and spill-proof Easy to carry - Integrated loop handle makes it easy to clip a carabiner or carry with the crook of a finger.