What's more metal than the left side of the periodic table? You, of course. But that's not the only thing. JAM Paper® Clear Heavy Metal Translucent Vellum 6 x 6 Square Envelopes are pretty hard core too. These envelopes are made out of smooth, high quality, 28lb, vellum paper and feature a clear quality. Each one is partnered with small, shining metal sprinkles. This pack contains a total of 25 envelopes. It will be clear to your friends that you're no square and that you're ready to rock out at that next concert when you use these heavy metal sparkling envelopes. Use these unique square envelopes for cards and invitations for birthdays, showers, and other celebrations.