Screen printed to order by hand with black ink.  The front can be personalized by unit.  The back has a 139th Maintenance-specific design based on the Marlboro cigarette packaging.
 
Contact us if you or your unit are interested in pricing for a bulk purchase.  If you don't see your unit's patch we can work with you to customize your bulk purchase with your patch.
https://www.blacksnakeapparel.com/contact