The 100% BPA-free CamelBak Groove bottle turns tap water into fresh, great-tasting water that can be carried anywhere you go. Its integrated loop handle makes it easy to clip a carabiner or carry with the crook of a finger, and the durable, spill-proof bottle is easy to refill and easy to use. The sustainable, plant-based filter, built into the straw, lasts about 3 months or 48 gallons (180L) of water. This product has been independently certified by NSF International for product safety and performance. NSF is an internationally recognized, independent testing agency that validates performance claims. CamelBak products carrying the NSF logo have been system tested against NSF / ANSI Standard 42 for the reduction of chlorine, taste, and odor.