I removed the retention strap and hardware for the gun. It is more than snug. I kept the retention strap for the extra magazine, it seems to help keep it in place better.
I just got back from a walk/run wearing the Belly Band and sweat pants. I placed my blue LEO replica in and it didn’t move a bit. It was so comfortable I really didn’t notice much difference. I do think that having a flat stomach makes this option a good choice (for me). Because it is elastic and velcro, I will probably need to purchase a new one every couple of years. But they are pretty cheap.
Example here is from Amazon. And check out the rating from more than 4,000 buyers.
Photo is clickable to the listing on Amazon ~Dawn