They are not Made from kydex, but some other kind of plastic. It kind of gives, whereas kydex is really stiff, and doesn’t feel uncomfortable, even against skin. I have a IWB for my Kahr CM9, the tiny lightweight 9mm (little over 1lb loaded) disappears appendix carry. Very comfortable. The holster has one belt clip, which means easy on and easy off, with the pistol in the holster, which IMO is a good safety feature. Pistol has limited capacity though, but nice to have the power of 9mm, and more slim than a revolver.
Ps. I have way more than 5 holsters. Lol