The AUTHORITIES HI-VIZ and BLACK VESTS have big Velcro surfaces on the chest in the front and on the upper back. The Velcro surface allows you to attach/switch patches to the vest according to the demands of your task. The Velcro surfaces on vests are designed identical in size so the same patches can be used in both regular and large size vests.
The Authorities Blanko Patch Upgrade includes cut on shape cordura blank patch to both left and right side of chest and also back patch. Authorities MOLLE Patch Upgrade includes cut on shape cordura Velcro patch with MOLLE webbing to right side of chest.