The buoyancy shorts were first developed by zone3 back in 2007 as the original inventors of this product zone3 thought it was appropriate to call their 53mm thickness smoothskin shorts 39the originals39 they have eight years of fantastic customer reviews behind them and have helped thousands of swimmers to improve both their body position in the water and swim technique the originals are made from top quality smoothskin neoprene and are stitched and bonded just the same as a triath