cowboy hat, 牛仔帽

U.S. President Barack Obama tries on a supporter's cowboy hat after delivering remarks at a Democratic National Committee (DNC) event at Gilley's Club in Dallas, Texas March 12, 2016. (REUTERS/Jonathan Ernst)
Photos of the day - March 12, 2016
https://news.yahoo.com/photos/photos-of-the-day-march-12-2016-1457808030-slideshow/photos-of-the-day-march-12-2016-photo-1457810617995.html