An inflatable swim buoy designed for open water swimming, races, and training sessions. Its bright color keeps the swimmer visible even in rough water and high waves. The buoy helps mark a person in the water, reducing the risk of accidents with approaching boats, jet skis, and other watercraft. It is also suitable for spearfishing, snorkeling, and diving. In addition, it can provide extra support for resting and staying afloat if the swimmer feels unwell. A whistle is included as well.