JAM Paper Black 9 x 12 Open End Catalog Envelopes with Gum Closures are made out of smooth, high quality, 24 lb paper. Each one measures 9 x 12 inches in size, making them ideal for enclosing standard sized sheets of paper without bending or folding. for keeping enclosed items secure, each one has a straight flap and a reliable gum closure. Their jet black color gives them a sleek and professional appearance great for the mailing needs of any office. Use them at home or in your workplace for formal mailings of all kinds. Their appearance and size makes them ideal for documents, forms, files, and more. Size: 9in x 1i2n | Color: Black | Material: Recycled Paper Send Colorful Greetings in Style Pair w/ shades like Orange and Yellow Perfect for Mailing & Crafting