I tried these again after having issues and just had to write a new review. These things are awesome and revitalized my closet.
They provide the perfect sharp loko I've struggled to find on polo shirts. This is my 2nd order!
Ordering my second batch now. Although, through Amazon because it's the same price and I'm a Prime member.
I love them, and they work very well. The only problem is figuring out which shirts to put them on, because they're not cheap. The irony is, the shirts that need them the most are your older shirts...and you might not want to waste a stay on them!
Also, make sure you put them on the right side of the collar. Put one on wrong once, and I could never get the glue residue off.
Other than that, they're awesome. Have not had one come off yet (close to 4 years), but I've ironed on all of them.