These envelopes feature a commercial style flap with a metal clasp closure that's reliable and easy-to-use as well as an optional gum closure for additional reinforcement. They feature bright colors that gives them a stylish, happy, and summery appearance! They are certain to get the attention of every recipient. Use them to send letters, documents, files, forms, drawings, manuals, pamphlets, flyers and more!Details:Lime Green10" x 13" envelope size24 lb. / 90 gsmAvailable in various countsMetal clasp closureOptional gum adhesive closureCommercial style flapRecycled paper