Inside waste band = iwb / outside waste band = owb. Owb are belt clip or belt loop. PS: match up the make and mod. firearm to the holster. Before you know it your holster inventory will grow. Good luck. 
Congrats. Great price. Looks exactly like “Concealment Express”.
You are right @Jerzees and that’s one of the big reasons I bought it.
It’s actually comfortable brother.
Wow. Should have figured that one out myself by using context clues! Thanks very much. I am relatively new to the sport. I do not carry, but have been shooting a Glock 19 for two years now, and am considering improving my skills, including drawing from a holster. I am formerly a member of the Sacramento Gun Club, where I purchased my Glock and also received some formal instruction. Thanks much. USCCA is an amazing organization and I am proud to be a member.
I’m glad you are willing to learn.
If you want to improve holster draw skills, I’d suggest to start with OWB 3 o’clock position (like old cowboy style).
Good luck ! 
Thanks Jerzy. Your assistance is much appreciated.
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