The product is a set of 2 Brita Premium Water Bottle Replacement Filters, designed specifically for 16.9 oz water bottles. These filters are made of plastic and use carbon/charcoal filtration method to provide clean and safe drinking water. With a 40 gallon capacity, this set is ideal for keeping your water fresh and pure while on the go. The Brita brand is known for its quality and reliability in water purification, making these filters a convenient and efficient option for staying hydrated.