Why do Olympic swimmers wear two swimming caps?


Tokyo 2020 Olympic swimmer Katie Ledecky is among those known for the double-cap method.

Something that you will see in Olympic swimming that may seem like redundancy is that the swimmers wear two swim caps. But what is the goal?

Like Yahoo! Sports wrote in 2012, a reason seems pretty obvious. The second cap ensures that the goggles stay securely in place on the first cap when swimmers dive into the pool.

The other reason is performance. Dave Salo, assistant coach of the 2012 United States Olympic women’s team as well as a personal trainer for several Olympians, said the caps are made of different materials. The first is usually latex and the second is silicone.

The latex cap tends to wrinkle on the head.

“The silicone outer cap holds shape better and doesn’t wrinkle as much, causing less drag,” Salo told Yahoo!

The Washington Post noted that Michael Phelps and Katie Ledecky were among those who wore two caps in competition. However, not all swimmers use the double cap method.

Why do swimmers slap each other before a race?

This is primarily to aid the warm-up process, Tomley writes. It can help increase blood flow.

Why do swimmers splash water before a race?

There are several reasons for this, writes Tomley, and it depends on the swimmer. Some might do this to lessen the shock of diving in the pool water. Some may try to use water to make sure their swimsuits fit snugly to their skin. And for some, it may just be part of their pre-race routine.


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