CPO Shirt (Dark Army)rag & bone CPO Shirt (Dark Army) rag & bone 97% , 3% : Dark Army Steeped in heritage, made for the modern day. This lightweight layer takes its cues from classic CPO jackets issued by the U. S. Navy in the 1930s. Featuring utilitarian flap pockets, it's cut from stretch cotton sateen for easy year round wear. 97% Cotton , 3% Elastane Color : Dark Army Mudd Dimple Snaps at Center Front, Faux Bone Button at Plackets Chest Pockets and Side Entry Pockets