*shrug*
Guess so. I wouldn't buy them. I stick with the softer thin plastic ones myself. Not only are they dirt cheap, they also bend a little while being worn lending the collar some stiffness while not being totally rigid like the thick plastic or metal ones, thus permitting a slight & elegant roll.
It seemed like I would always try to get one more wear out of the plastic ones and one would end up creasing, usually early in the day, and really goofing the collar up.
I splurged. But the economist in me figures that if I compare the price of a set of brass stays over their lifespan vs. as many plastic ones that I'll need, I probably come out ahead, in the long run.