Body Glove Swimwear was invented for the sportsmen and women for aerodynamic purposes and especially for swimmers to give them that extra edge for gliding faster through the water in competitions where a split second can mean the difference between winning or not.
It is named so because of the way it fits onto the body. like a glove and fits like a second skin.
Even in other contact sports like rugby they also have their shirts fitted this way as it not only reduces the friction when running but also does not allow the opponent the chance to grip the running player or even hold him or pull him down, as it fits so tight on the upper bodies like a second skin, but is made of a stronger, much stronger material but also has breathable sections to allow for skin breathing and keeping cool.