Buoyancy Shorts - The Originals : 5/3mmThe Buoyancy Shorts were first developed by Zone3 back in 2007. As the original inventors of this product, Zone3 thought it was appropriate this design 'The Originals'. They now have over a decade of fantastic customer reviews behind them and have helped many thousands of swimmers to improve both their body position in the water and swim technique. Buoyancy Shorts serve three main purposes: For novice or intermediate level swimmers the major factor