These pins are made out of heavy duty acrylic laser cut to shape and printed on one side, so the image shows through with a thick crystal clear appearance. We use heavy glue to hold the pin into place and finish it with a nifty pin back. Each of these pins are made by hand in our small Minnesota shop, but due to the fact that we make these pins by hand there may be some slight differences between each one. Don't worry we give the ones that look like crap to our kids. Thank you for looking.