These envelopes are made out of smooth, 30% recycled, 24lb paper. Each of these envelopes measures 4.125" x 9 .5" in size, making them ideal for three-times-folded standard sized sheets of paper. These envelopes feature straight flaps with dependable gum closures. Each one features a bright and vibrant color that gets them immediately noticed! The style and color of these envelopes make them ideal for both personal and business mailings that need to stand out and make an impression! Use them to mail letters, announcements, promotions, documents, and more!Details:Yellow4.12" x 9.5" envelope size24 lb.Available in various counts30% recycled