Uncle Mikes Inside the Pants Open Style Holster has ultra thin four layer laminate no thicker than conventional suede leather holsters. The internal moisture barrier will not transmit perspiration to gun. This left handed model is compatible with your 3.75-4.5" barrel large auto.The open-style Inside-the-Pants holster from Uncle Mike's allows the wearer to carry concealed without drawing unwanted attention thanks to its slim and flexible design. Features: Ultra-thin four-layer laminate no thicker than conventional suede leather holsters Internal moisture barrier won't transmit perspiration to gun Smooth nylon lining for easy draw Suede-like exterior helps anchor holster inside pants