9Fifty Perf Property Original Fit Snapback Hat in all black perforated leather. It's leather that allows ventilation to your head. In other words, the little holes on the top of the hat allows airflow that makes your head more comfortable to wear in hot weather, especially when skin comes in contact with the leather. Not only is it a comfortable hat to wear but it's a hot hat to wear on any special occasion. Made of 100% pu crown and 100% polyester visor.