Mr. Pen Clasp Envelopes come in a convenient pack of 18, making them ideal for both personal and business use. Each envelope measures 9 by 12 inches and is made from high-quality brown kraft paper, ensuring durability during transportation. These envelopes feature a metal prong clasp and a gummed seal on the flap, providing extra security for your important documents. Whether mailing items or organizing paperwork, these envelopes keep your contents safe. Additionally, they are compatible with most inkjet and laser printers, allowing for easy and quick addressing. Choose Mr. Pen Clasp Envelopes for reliable and stylish document handling.