Ergonomically designed, simple, lightweight and super tough. Pro-Pak holsters lie flat against your body, making them an excellent choice for use under jackets. They're constructed of an extra-thin laminate with a nylon outer shell. The smooth nylon lining protects your gun's finish and aids in drawing and reholstering. Vertical carry provides excellent concealment, comfort and retention, especially with large firearms. Off-side tie-down has single mag case for autos or single speedloader case for revolvers. Fits 3.75-4.5 barrel large auto.