The swim buoy/floating dry bag is necessity that each swimmer need one,so the market is big. It is widely used all over the world,such as USA,UK,Spain,Germany,Switzerland,Netherlands,Singapore,and so on. Also it has many advantage: 1.Always be visible Let the boat traffic know you are in the water 2.Have a rest if needed The buoy will fully support your weight 3.Keep your stuff dry & away from thieves Take all your important things along for a swim 4.Portable & Lightweight Leightweight to bring along for swimming, kayaking in the open water.