Brita Sport Water Filter Bottle, Twin Pack Two 20 ounce squeezable water filter bottles and 2 filters 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 water bottle features carrying loop, drink spout and is top rack dishwasher safe Replace filter every 2 months with black Brita Bottle Replacement Filters item number 60258 35818