Authentic US Military surplus, the OG 507 2 Pkt Fatigue Shirt made from poly cotton dura press fabric in the mid 1970's, this version replaced the OG 107 100% cotton design for increased durability. With a simple design featuring 2 chest pockets and a button up front with single buttonhole cuffs, this shirt is perfect for any activity, from city life to outdoor adventures. US Military Specification Sizing applies.Â