Brown Coat Tactical’s newest product, the Gleipnir Holster Leash, allows you to turn your belt holster into an off body carry holster for use inside a bag or pack. It is essentially a static line for your holster.
The Gleipnir consists of a short section of scuba webbing to attach the holster to, a section of paracord, and a split ring. The split ring can be attached to something inside your bag (or other off-body concealment locations). Alternately, you can use other user supplied attachment methods like heavy duty safety pins.
The static line is a concept with which many self defense knife users will be familiar. It is basically a way of attaching a sheath (or in this case a holster) to a fixed object so that when the gun or knife is pulled away from the fixed object, the sheath/holster is stopped by the cord and removed automatically.