Following this, effective January 1, 2010, World Aquatics decided to ban high-tech full-body swimsuits. This ban took place so as to not give any competitor an unfair advantage.

Full-body swimsuits made popular by Michael Phelps in the 2008 Beijing Olympics, were banned by World Aquatics, "the sole and exclusive world governing body for all Aquatics," in January 2010.

Here's why full-body swimsuits aren't allowed in the Olympics. Full-body swimsuits were made popular in part by Michael Phelps in the 2008 Beijing Olympics where he broke seven world records.

Full-body swimsuits made popular by Michael Phelps in the 2008 Beijing Olympics, were banned by World Aquatics, "the sole and exclusive world governing body for all Aquatics," in January 2010.