No retention strap. The clip on the pistol itself holds it pretty securely. I put it on and jiggled up and down while bent over. No slips!
No wet molding, just folded it over and sewed it.
So far, it fits good. But time may tell, haha.
The harness is the hardest part, trying to get the straps the right length. My hubby helped me out. I made this because I have not been able to find a ready made holster that works for me. Too many belly rolls, haha!
Lessons learned: be sure straps are not too wide for the buckles!
Thanks, ya'll for the comments and encouragement!