In this 10-pack from D'Addario, you'll find ten picks made of 'classic' celluloid, but with a little funny twist. While the material sounds just like you are used to celluloid: warm and pleasant, the picks are treated with a glow-in-the-dark finish, so that in the dark they light up, so to speak. All you have to do for this is put them in the sun or under a lamp for a while and they give off a bright glow in the darkness. A nice effect for on a slightly less lit stage, but also handy in the studio when you go home last at night (again) and the lights are already out and you find that you have forgotten your picks! You'll never have to look for them again. After all, this is the extra heavy version.
Guitars > Plectrums