Enjoy freshly filtered water anywhere the CamelBak Groove Water Bottle filters as you sip, so you can hydrate on the go. Easy to refill and easy to use bottle with a filter built into the straw turn tap water into fresh, great tasting water anywhere you go. Reusable, BPA free, spillproof bottle is easy to carry. Flip and sip for easy intake flip shut for storage and no spills with the patented CamelBak Big Bite Valve. Hydration capacity: 20 oz. 0.6 L. Tritan bottle material makes the Groove clear, durable, and dishwasher safe. Big Bite Valve: medical grade silicone. Straw material is BPA free. Plant based carbon filter included: good for 60 gallons or four months of use. Search Item 10845497 for 2 pack replacement filters.