A holster-style pouch assembly carries a post-surgical fluid drainage system. The assembly includes an adjustable waistband, a pouch and a loop band. The pouch has an upwardly extending flap for at least partially closing off the pouch interior from the exterior environment. The flap has closure mechanisms attachable to and detachable from closure mechanisms disposed on the pouch interior and exterior. The flap extends over the waistband such that the pouch is suspended and secured with fastening mechanisms to the waistband when the flap closure mechanisms and the pouch closure mechanisms are attached. The pouch is capable of containing at least one post-surgical fluid drainage container. In operation, one or more fluid drainage tubes is capable of extending downwardly into the fluid drainage collection container inside the pouch. The fluid drainage tube is securable between the waistband and the loop band when the band closure mechanisms are attached.
