Don't buy these
These are absolutely terrible.  Worst quality item I've encountered in a long time.  The ribbon itself is cheap and flimsy and shreds.  When I tried hooking them to my children's masks, every one of the end straps came out of the little metal pieces.  Useless.  I paid $14 for these and they aren't worth more than $3 on a good day.  Very disappointing.
Rating: 1 stars