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.

(L-R) Zoe Kravitz, Jason Momoa, and Lisa Bonet attend the world premiere of “Conan The Barbarian” held at Regal Cinemas L.A. Live on August 11, 2011 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)

A man walks on the Cobb as storm waves break behind on December 13, 2011 in Lyme Regis, England. (Photo by Matt Cardy/Getty Images)

Soo Joo Park poses during a photocall before the Chanel Spring/Summer 2019 women's ready-to-wear collection show during Paris Fashion Week in Paris, France, October 2, 2018. (Photo by Gonzalo Fuentes/Reuters)

Winner. “I took this vertical image in the Quarry Bay district of Hong Kong during the dusk ‘blue hour’, when there was a perfect balance between the ambient light in the sky and the artificial lights of the high-rise residential buildings”. (Photo by Jatinder Heer/The Guardian)

Elephant fights off hyenas to save baby. “This is the incredible moment an elephant came to the rescue of one of its babies being attacked by a pack of hyenas. The elephant is seen charging at the hyenas to ward them off its offspring. The photos were captured by American photographer Jayesh Mehta, 47, in the Savuti region of the Chobe National Park in Botswana”. Photo: The elephant is seen charging at the hyenas to ward them off its offspring. (Photo by Jayesh Mehta/Caters News)

Jim Mahoney looks out from his yard towards the construction of the Foxconn manufacturing complex, after he and his wife Kim refused to sell their home and property to Foxconn, in the Racine County city of Mt. Pleasant, Wisconsin, U.S., July 27, 2019. (Photo by Brian Snyder/Reuters)

Costumed attendees participate in the Dragon Con Parade, during the annual science fiction, pop culture and fantasy convention in Atlanta, Georgia, USA, 02 September 2023. Thousands of attendees, some costumed, crowd downtown Atlanta for the annual Labor Day Weekend gathering. (Photo by Erik S. Lesser/EPA/EFE)