What is a pull buoy? This is the number one question we get when new swimmers come into our swim shop and are told by their coach they need a swim pull buoy. The purpose of the pull buoy is to allow you to focus on your upper body while training. This allows you to have an upper body workout where you focus on your stroke and body rotation. The pull buoy floats your legs at a balanced position in the water, which is the key to success with a pull buoy. It is very important to make sure you don't have a pull buoy that is too big and your legs end up higher than the rest of your body. This will cause your upper body to submarine or dive downward thus making your stroke much harder. The opposite can happen if you use a junior size pull buoy and you are not a small person. Your legs will drop, and arms and head will pop up too high in the water. We recommend children under 14 and smaller adults use a junior size pull buoy and then larger adults and teenagers use the regular size buoys.