The present invention provides a handgun holster apparatus comprising a body, first strap, and second strap each made from moisture-wicking layers and moisture-repellant layers. The holster further comprises at least four reversible fasteners: a first reversible fastener affixed to the first strap, a second reversible fastener affixed to the second strap, a third reversible fastener affixed to the front side of the body, and a fourth reversible fastener affixed to the back side of the body. The first and second straps each respectively has open strap positions and closed strap positions allowing for the handgun to be removable from the holster as well as the holster to be reversibly affixed to the inside of a garment.