0.1μm ACF+UF Filters: With ACF+UF two filters can tackle ANY water challenge. The ACF(Activated Carbon Fiber) filter lasts up to 132Gal/500L, and the UF (Ultrafiltration) filter up to 1057Gal/4000L. Engineered with a time-marking ring helps track filter usage easily. BPA-Free Materials: Crafted with BPA-free Tritan plastic, our Tritan water filter bottle is more shatter-resistant than conventional ones. (NOTE: C3 filtered water bottle may require more suction than standard bottles due to its 6-STAGE ADVANCED FILTRATION.) 36OZ Large Capacity: The 36oz mega-size water bottle with filter holds enough water for long hikes, road trips, or busy workdays. Wide-mouth design lets you easily add water outdoors, or quick-fill from any tap. Leakproof & Adventure: With the leakproof lid, durable handle and anti-slip grip, suited for different scenarios include gym workouts, outdoor camping, wilderness adventures, hiking, backpacking, daily commutes, office use, school, road trips, and outdoor sports, providing reliable hydration wherever you go. Laboratory-Verified Filtration: With SGS & NSF/ANSI Standard 42/53/P231 tested & Certified. Removes 99.9999% Escherichia Coli, Klebsiella Pneumoniae, etc. , 99.12% Turbidity, 99.93% Bacillus Subtilis, etc. , 99.97% microplastics, 99% chlorine. Filtered Water Bottles for Travel: This C3 Filtering Bottle reduces chlorine taste, odor and particulates from rivers, lakes, and tap water in harsh outdoor conditions, making it the perfect companion for city tap water, rivers, lakes, or disaster emergencies. Membrane Solutions Filtered Water Bottle, 36oz BPA-Free Bottle with Replaceable ACF & UF Filter Cartridge, Portable Water Filter, Travel, Hiking & Camping for Drinking Water Anywhere(Grey)