Pro-pack holsters are the ultimate. They're ergonomically designed, simple, lightweight and super tough. Pro-pack 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 Kodra nylon outer shell. The smooth nylon lining protects your gun's finish and aids in drawing and re-holstering. Vertical carry provides excellent concealment, comfort and retention, especially with large firearms..