JAM Paper Red Recycled 6" x 9" Open End Envelopes with Clasp Closures are made out of smooth, high quality, 30% recycled, 24 lb. paper. This pack contains 500 envelopes. Each one has a straight flap with rounded corners and a reliable, easy-to-use metal clasp closure. In addition, they have optional gum closures for extra reinforcement. Each one of these open end envelopes measures 6" x 9" in size and features a bright and bold red color. This color makes them especially useful for mailings during the Christmas season and around the time of Valentine's Day. Use them to send letters, promotional materials, holiday cards and more!Details:Red6" x 9"24 lb/64 gsmStraight flap with rounded cornersMetal clasp closureOptional gum closures500 envelopes30% recycled paper