Michael Phelps continues to pile up medals, but his high-tech swimsuit's days are numbered

Join Our Community of Science Lovers!

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American



On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


With science and technology advancing athletic performance across all sports, swimming's Fédération Internationale de Natation (FINA) governing body has decided to limit the amount and type of materials that can be used to make the fancy swimsuits worn by elite swimmers such as Michael Phelps.

The new rules won't affect the FINA World Championships taking place this week at the Foro Italico in Rome, where six new world records have already been set by swimmers in suits made from materials such as polyurethane, and Phelps has already won a gold metal. (Phelps won eight gold medals at the Summer Olympics in Beijing last year.)

Such attire—more like a wetsuit than a swimsuit—is believed to have contributed to the 108 world records set last year and nearly 30 so far this year, the Associated Press reports.

FINA has for several months been reviewing procedures for swimwear approval, namely in the areas of the swimsuits' material, thickness, use, shape and availability. The organization voted overwhelmingly last week to limit swimsuit coverage to between the waist and knees for men, and not beyond the shoulders or below the knees for women, according to the AP. The new rule also says suits must be made from textiles (as opposed to titanium alloys and other composites) although FINA has yet to provide a more complete definition of this.

Speedo, one of the most prominent swimsuit companies, makes body-hugging apparel that mimics shark skin, alternating between something like the rough dermal denticles found around the fish's nose and smoother derma located farther back on its body, according to a 2004 Scientific American article examining the technology behind these swimsuits. Some Speedo suits also feature titanium-silicon scales on the inner forearm that grip the water better on down strokes, as well as rubber bumps across the chest to help reduce resistance. TYR Sport, Inc. and Nike are two other companies that make high-tech swimwear.

Image of Phelps © moose manda via Flickr.com

Larry Greenemeier is the associate editor of technology for Scientific American, covering a variety of tech-related topics, including biotech, computers, military tech, nanotech and robots.

More by Larry Greenemeier

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe