Petmate's® Mason Jar Gravity Waterer features designs inspired directly from classic mason jars. This self-dispensing waterer for pets comes equipped with a replaceable charcoal filter to remove impurities from a pet's drinking water. Designed with durability in mind, this gravity waterer keeps a dog or cat hydrated throughout the day. Whether at work, traveling, or otherwise preoccupied, pet parents can rest easy knowing their pet has constant access to filtered water. To fill, simply release the bottle from the quick-lock base and fill the bottle with water. Once the bottle is full, turn it upside down and secure it to the base. Made out of durable BPA-free plastic with the safety of pets in mind. Made in the USA.