The durable, double-wall insulated bottle stays cold for a full 24 hours. It includes 1 replaceable filter, which reduces Chlorine (taste and odor) as you drink. Featuring an enclosed, easy-sip straw, a built-in carrying loop for grab-and-go portability, and a one-handed push button lid, this bottle is designed for effortless convenience. The bottle has a leak-proof design to help you avoid surprise drips and spills. Enjoy hassle-free hydration anywhere: at home, the office, at a sporting event, or the gym. One Brita water filter can replace 300 standard 16.9-ounce single-use plastic bottles each year, so you can stay hydrated, save money, and reduce plastic waste. For best results, replace the filter every 40 gallons or about every two months. With Brita, take filtered water anywhere you go.