This is a DeSantis Gunhide Inside Waistband Holster known as the M78, model M78KAB2Z0.
The Infiltrator(R)"AIR" IWB holster is adjustable for both height and cant. Its holster component is adjustable precision-molded Kydex(R) and the back component is all synthetic and "breathable." It comes with "C" Clips" and "J" clips are available.
Features:
Kydex front and breathable nylon backing IWB holster
C Clips included are adjustable for both height and cant
Features six tension screws on the holster to allow user to adjust their draw to how they see fit