this is exactly what i was looking for as far as the collar stays. Of course they're not as stiff as metal, but I like the lighter and thinner plastic. They're sturdy enough to fit inside every shirt I own (and quite a few). The case in which they appear seems solid. My only small complaint is that they pack so many things in the suitcase that I struggled to get them out and now can't fit them all back in. larger suitcase, more neatly packed.