The 5.11 Professional Polo Shirts are for both on and off-duty wear. Made to meet the demands of law enforcement organizations, these professional polo shirts are for special programs such as bicycle patrol, casual on duty work, training facility wear, office wear and any other duty which does not demand a formal uniform. are: Made of 100% cotton, specially treated not to fade, wrinkle or shrink. Has two pen pockets located on the left sleeve. This unique feature allows an operator to store a pen and pencil or a small pen light along the arm rather than in the button down portion of the shirt, eliminating the danger of being injured. The no roll collar has flexible stays which keep the collars from rolling at the edges. The pen pockets are stitched to endure constant use, all seams are designed for both comfort and durability.5.11 Tactical Series uses only Melamine buttons on the 5.11 Professional Polo Shirts. Imported. eCop! Thanks you for your business. MFG MPN: 42056 UPC: 870699008508 MPN: 5-42056016XL