20 ounce soft-sided water filter bottle with 1 filter. Design may vary.;1 water filter can replace 300 standard 16.9 ounce water bottles;Filter sits inside water bottle, reducing chlorine taste and odor, often found in tap water;BPA-free reusable water bottle features drink spout and is top rack dishwasher safe;Replace filter every 2 months with black Brita Bottle Replacement Filters item number 60258 35818