Abstract: The invention is a unique ergonomic personal flotation device suitable for comfortably supporting a human user while floating in a fairly calm water-based environment such as a swimming pool, lake or other natural body of water that allows a person using the flotation device to comfortably lie on their stomach, in order to provide even tanning on their backside. Likewise, the person can also comfortably lie on their back to get tanning on the front of their body. The ergonomic flotation device is comprised of a number of separate air chambers that provide an overall comfortable ergonomic experience when in use by a person. When lying on their stomach, there is provided an opening for the person's face with side air channels around the opening for comfort. When lying on their back, there is provided a separately inflatable lower back support chamber.