The Avery Dennison Ave-74804 Top Thumb Notch Vinyl Envelopes are 9″ x 12″ envelopes designed for organizing and storing files. Manufactured by Avery Dennison, a trusted brand in office supplies, these envelopes feature a convenient thumb notch for easy access to the contents. With a durable vinyl construction, these envelopes offer a reliable way to protect and access important documents in a professional setting. Perfect for businesses and individuals looking for a secure and efficient filing solution.