Be extra careful wearing this Star Trek Security Uniform Polo shirt. Wearing it may decrease your survival rate on mission on-board the Enterprise. These Star Trek uniform polo shirts are perfect for the corporate-casual trekkie in all of us. They're made from 50% cotton and 50% polyester and feature embroidered science, engineering or command insignia. All you need to do is choose a color! Be sure to check out our Size Chart to get an idea of the average size and dimensions of this Starfleet Security Uniform Polo Shirt. Check back often for some of our new Star Trek clothing and other Star Trek items at great prices only at Animation Shops.