Others say...

"A novelty, not a pick, but so what?"
Because these picks are holographic, they have a hard cardboard-like backing and overall feel like something between a thin and a medium. They make a slightly unpleasant clicky sound when played. This will be much less an issue with an electric guitar where what matters is the sound coming out of the amp rather than the guitar itself.

That said, these are terminally cute, and I mean that in a nice way. They always get a positive response even among adults, who get transported back to their youth by the holographic image, even if only for a second. If you play for children, expect to be giving up a lot of these. If you're lucky, you can survive by giving one to the guest of honor and maybe to any aspiring guitar players in the audience.

"Great!"
I just ordered these for my 14 year-old daughter. They are really cute, great pictures, fun to look at, and work well.

If you want a cute, fun pick to use with your guitar, then we do recommend these.

"little guitar player!"
My daughter wanted a pink hello kitty guitar for her 7th Birthday. The Hello Kitty guitar was pricey, so we got her a simple pink guitar and Hello Kitty picks. These are SO cute; it looks like kitty is jamming!! A little pricey, but worth every penny!