They are made by Elmer's They say they are Non Toxic (great for kids), Acid Free!!
You will not be disapointed with these and the best thing is they are $7.97 for a package of 5. You can also get them one at a time. I got a silver metalic one for $2.57 which I think was a bit more then the regular colors because it was metalic but I could be wrong.
Be sure to come back and let me know what you think of these because I know you will be running out to Wal-Mart to find these.