65% polyester and 35% rayon Five Supercrease military-style creases Conventional band and collar with permanent collar stays The Deluxe Tropical line has a fabric composition of 65% polyester which provides a crisp durable uniform shape and 35% rayon that has the feeling of comfortable silk. This durable long sleeve has symmetrical shoulder straps and a button placket front. These shirts are popular among police agencies for all the extras they offer. Including Supercrease creases on the front and back and ready to wire up with cameras and communication devices.