How to use: Simply pull on the t - shirt like you would with any regular shirt. You can wear it under your tactical vest or plate carrier. Put your small items such as wallet and passport in the zipper pockets on the sleeves. Attach your flag or unit ID patches to the hook and loop fabric panels on the pockets. Notes: Make sure to close the zippers properly to avoid losing your items. Don't use sharp objects near the hook and loop fabric to prevent damage. Maintenance: Wash it in cold water with like colors. You can tumble dry on low. Iron on a low setting if needed.