Buy Caps and Hats Vietnam Veteran Cap Military Vet Vintage Light OD Green Mens Hat Olive 100% Cotton Vietnam Veteran Hat and Bumper Sticker set by Buy Caps and Hats Vintage style Light olive drab OD green color. 100% soft brushed twill Cotton Rothco cap. Celebrates the service of Vietnam Veterans. Embroidered lettering and image. Adjustable velcro strap to fit most adults.