Ascent Back Saver is ideal for many drinking water applications. The Back Saver comes standard with hot and cold, room and cold and room temperature, in an all-in-one unit. The latest design of universal adapter fits various types of bottles such as 6-, 5- and 3-gal. bottles, 5-gal. glass bottles and 2.5 gal. PET bottles. The Back Saver is truly an innovative water cooler that offers the consumer convenience, safety, versatility, functionality and economy.