These JAM Paper white 9.5" x 12.5" envelopes with self adhesive closure are made out of smooth, 28lb paper. Each one opens on the short end and feature a basic white color that makes them ideal for all business and personal mailing purposes! Their size allows you to enclose standard sized sheets of paper without folding or creating creases in them! Each one has a straight flap with a self-adhesive peel-and-seal closure that is guaranteed to keep the contents inside from slipping out during transport! Use these convenient and reliable envelopes to send documents, files, forms, and more!Details:White9.5" x 12.5" envelope size28 lb. weightStraight flap with peel and seal closureAvailable in multiple countsPaper