100% pre-shrunk cotton. Customized for use with a plate carrier; velcro patch on one sleeve, our logo on the other. Velcro is sized to fit a 2x3.5 inch flag patch. Velcro US flag patch is included! It is recommended that you wash shirt with a patch on the sleeve to maintain velcro shape (it has a tendancy to curl in the dryer without a patch attached). Shirt made in China, customized in the USA.