Water Bottle Filter is made of food-grade, lead-free materials. Uses 100% coconut shell carbon block from Sri Lanka for maximum filtration and cleaner water. This Water Bottle Filter is compatible with BB06, 060258363241, and most hard-sided water bottles, as well as soft-sided sport water bottles and stainless steel water bottles. (If you are unsure whether your water bottle is compatible, check the replacement filter model number at the bottom of the bottle.) Enjoy great-tasting water by replacing the filter every 2 months or after 40 gallons, whichever comes first, depending on water conditions. Each Water Bottle Filter can replace up to 300 standard 16.9-ounce plastic water bottles, helping reduce plastic waste and lower costs. The filter is easy to install with no tools required. Note that installation methods may differ between hard-sided bottles and sport bottles. For BB06 Material: Plastic Color: Black + White Package Contents: 6 x Water Bottle Filters Note: The package includes only the items listed. Light reflection and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.