2"x2" Coin Envelopes - 500/box, Pre-gummed Flap, White, Acid Free Net Weight: 1 lb 13 oz Per Box (500 pcs /Box) Size (W x L): 2" x 2" Color: White, easy write on. Weight (Density) of Paper: 27 lbs (100 gsm), acid-and-chemical-free paper. Flap: Pre-gummed flap for easy sealing.