Recently acquired a Shield 9mm, and am looking for an IWB leather holster. Have been on Amazon, Midway, and other sites looking at various products, and one thing I am often finding confuses me. Most leather holsters I see with many good reviews, state in the product description that they fit a hold range of guns. I just don't get that. One holster ad (The Defender) listed the same holster being for Springfield XDS, Glock 17, and S and W Shield.

How can a holster that will take a gun the size of a Glock 17 also properly fit a Shield, which is about two thirds the size of a Glock 17? I have 2 OWB hip holsters (Glock 19 and Sig P228). They both were made for one gun, and form fit the gun perfectly.

Any comments/recommendations on leather IWB holsters that are decent quality and snugly fit a Shield would be appreciated.