A prototype slide featuring integrated cooling gel, designed to be stored in a refrigerator like a cooling pad for the foot, is pictured resting on a cooler in the APEX athlete performance department inside the 'Laces' building of German sportswear manufacturer Adidas during the 'Home of Innovation (HOI) Experience' event in Herzogenaurach, southern Germany, on September 25, 2026. The event offered insights into the Adidas archive and the Innovation Lab, with presentations of the latest innovations in shoes and apparel, as well as test demonstrations. (Photo by Daniel Karmann / AFP via Getty Images)