Good for adults too....
I actually bought these for myself, not my kid-------as a means to keep my Uvex blue-light blocking safety eyewear on my head, and not sliding down my face, while using it to look at my computer screen.  The eyewear is great (fits over my glasses), but I needed a strap that would hook into the holes at the end of the eyewear's stems.  These straps may be a tad overpriced, in my opinion (when coupled with shipping charge), but for me they were worth it because they filled the bill perfectly.  Didn't see anything else on Amazon quite like these straps.
Rating: 5 stars