Earlier models had stronger magnets, which was good for thicker shirts. This kit replaces a pair that I have had for a long time and really liked. I lost this set when I forgot to remove the corsets from a shirt I sent for dry cleaning. Love the fact that I now have 3 different sizes, the 2 inch is perfect for the new shirt style/cut. It can be difficult to get the corset out of the leather case but I imagine it will loosen over time. Overall I'm satisfied, not overly impressed.