No Curl Collar StaysNo Curl Collar Polo Shirt Collar Stays (You Choose: Peel-&-Stick or Iron-on)

Is it mandatory to use the product with the dispensing case, or can I just buy the refills to save money?

Anyone else have problems with collar flipping up . My son says the collar on his golf shirt kept flipping up into his cheek all day. Any suggestions

After peeling and sticking, do you then iron on if you want them to be permanent?

are these for just polot shirts or can you use them on regular dress shirts? Bigger difference compared to the metal dress shirt collar stays?