Skeleton involves a person riding a small sled down a frozen track while lying face down. The sport is a more intense form of luge because skeleton competitors leap onto the sled and slide downhill head first. Skeleton athletes can reach up to 80 mph on straightaways, causing forces up to 5g, so the helmet is a critical component for attitude as well as safety.

Spectators dance in the infield before the 150th running of the Kentucky Derby at Churchill Downs in Louisville, KY on Saturday, May 04, 2024. (Photo by Jabin Botsford/The Washington Post)

Lindsay Heimbach goes airborne while sledding down a hill on Mt. Lemmon December 27, 2008. (Photo by James Gregg/Arizona Daily Star)

A model walks down the runway at the 13th China International Young Fashion Designers Contest during China Fashion Week on March 25, 2005 in Beijing, China. (Photo by China Photos/Getty Images)

Riot police runs as a woman falls down during a May Day rally in the Kreuzberg district of Berlin, Germany, 01 May 2016. (Photo by Kay Nietfeld/EPA)

Farm animals are walked down the aisle and blessed by church officials during the “Blessing of the Animals” at the Christ Church United Methodist in Manhattan, New York December 7, 2014. (Photo by Elizabeth Shafiroff/Reuters)

A mahout rides an elephant among the traffic down a street in Piliyandala, a suburb of Sri Lanka's capital Colombo on September 27, 2020. (Photo by Lakruwan Wanniarachchi/AFP Photo)

A person falls down stairs while sledding in Central Park as snow falls in Manhattan, New York City, U.S., February 7, 2021. (Photo by Andrew Kelly/Reuters)