School Smart 28 lb Kraft Coin Envelopes with Gummed Flaps - 3 1/8 in x 5 1/2 in - Box of 500 Sold as a Pack of 500 Sturdy 28 lb. manila/kraft paper Great for coins, seeds, keys, buttons and other small objects Envelopes seal by moistening the gummed flap Write on front or back for easy identification