It’s what southerners call a beanie..
I didn’t know it also meant a sled until I came to Japan :p
Philadelphia Toboggan Coasters, commonly referred to as PTC, is one of the oldest existing roller coaster manufacturing companies in the world. Based in Hatfield, Pennsylvania, it was established in 1904 by Henry Auchey and Chester Albright under the name Philadelphia Toboggan Company. The company manufactured carousels, wooden roller coasters, toboggans (roller coaster cars) and later, roller coaster trains.