The iconic Carhartt Beanie A18, a Millennial favorite. Harry Styles, Rihanna, Brooklyn Beckham, to name a few, wear the iconic Carhartt Watch Hat and have made the Beanie popular for Carhartt. When you walk through the center of most cities, it is inevitable to not see a cool Carhartt hat in the streets. The Carhartt A18 Watch Hat has been a staple for every wardrobe for more than 31 years. Rib knit quality for extra warmth and comfort with signature Carhartt label on the front.