Each 6" x 6" envelope is well-crafted from high quality 28lb paper

023" polyethylene plastic tags resist dirt

each one also has an optional use gum closure

1-difluoroethane

JAM Paper #5.5 Coin Envelopes, 3 1/8 x 5 1/2, Black, 50 Pack VariesBy:Default Each 6" x 6" envelopeJAM Paper & Envelope #5. 5 coin envelopes are great to use to store small items such as coins, jewlery, and small parts. Need a secure place to store your coins or small items? Check out these underrated susperstars. Coin Envelopes are small, feisty, and get the job done. Size really doesn't matter when it comes to these sturdy little envelopes. They are also good to use to hold cash, deposit slips and checks. These envelopes measure 3 1 8 x 5 1 2