Inexpensive, gets the job done
The Subcompact is exactly what it says, likely very good for a subcompact single-stack magazine, or for your keys. While it would fasten over a Kahr CW-45 magazine, the material was stretched pretty thin. The Standard easily holds the CW-45 mag, or a 13-round XDm 3.8 Compact 9mm magazine with length to spare and will stretch only a bit to also hold the 19-round extended magazine also shipped with the XDm 3.8 Compact 9mm. Best to avoid using the "grip extention" on the 19-rounder - you only have to pinch the tender skin along the bottom of your palm between the bottom of the grip and the top of the "grip extention" ONCE as you slam the fresh extended mag home and hear it lock into place (please don't ask how I know that).