These things make all the difference. If you want to look good in a dress shirt, you need stays. These have held up really well for me under pretty heavy use (about 3-4 days/wk and 14 hrs/day). The "button" part that goes through the clasp is a plastic/rubber?? that seems to be losing the ridge that holds it in the loop. But at 8 dollars a set I am ok with buying 2 sets per year given my heavy use.

Just kind of a weird side note, I'm not an old guy and was kind of worried, like some others might be, about how you look to a woman with these things in "certain situations". Gotta say, the response from women has generally been "wow I'm impressed, you even have the garter things for your shirt".  Just thought I'd throw that out there given what I read in some reviews before buying these.