Mil Sht-Jac Jackets And Coats GreenBeams Plus "MIL SHT JAC" Overshirt Made of lightweight tear resistant cotton, this overshirt features a straightforward construction with a regular silhouette and unpadded construction. The model integrates three dimensional patch pockets with flaps on both sides of the chest and a breast pocket on the sleeve. It features a classic collar, front button closure and slanted pockets on the sides. Surfaces finished with visible seams and uniform texture.