Gun Model Ruger LCP. The holster's hooked shape - at the base of the handgun's trigger guard - is designed to catch on the pocket so that, with practice (using an unloaded firearm) and while using the proper pants, you can draw the firearm while the holster remains in your pocket or falls away.
Very comfortable holster. Works great In the pocket. I even carry it appendix. The suede leather is very comfortable. I carry the Kel Tec P-32. Great little holster.