Effective filtration: quality carbon blocks remove chlorine and benzene and reduce deposits, rust, taste and odor, and sand, helping improve the clarity and flavor of your drinking water. materials: The water bottle filter uses natural coconut activated carbon blocks, delivering effective reduction of pollutants and better tasting water. Extended life: Each filter provides 40 gallons or about 2 months of fresh water. For performance, the filter every 40 gallons or 2 months, noting that replacement timing depends on your water quality. Compatible models: Compatible with BB06, 060258363241 and most hard sided water bottles, as well as the Sport soft sided water bottles and stainless steel filter bottles. Use scenarios: Outdoor activities: Hiking or camping where you source water from natural or public sources to improve taste and reduce contaminants. Fitness and daily use: Gym, commute, or office hydration, providing cleaner, bettertasting water on the go. Travel and everyday trips: Hotels, airports, or road trips where access to clean drinking water may vary. Key attributes at a glance: filtration type and material (natural coconut activated carbon blocks), effective pollutant reduction, 40gallon/2month lifespan, compatible bottle models (BB06, 060258363241, most hard sided bottles, Sport soft sided bottles, and stainless steel filter bottles).