New Era NFL 59Fifty Sideline Cap - Men's The New Era 59FIFTY Sideline Cap is the on-field cap you'll be seeing your favorite athletes in on Sundays in the fall. Features the logos of two global giants with the New Era Flag on the left and the NFL logo shield on the back. This official sideline cap uses primary team colors with black under the visor for a sweet style. The front has a raised embroidered team logo. 100% polyester. Imported.