Top Flight knows paper! As a family-owned and operated business with over 90 years of experience in the industry, Top Flight makes high quality paper based products for home and office use. Top Flight has the simple solution for all of your postal needs. Our security envelopes come in all lengths and shapes as well as a variety of pack sizes, making them an essential part of every home or office. The Top Flight Boxed Security Envelopes are sturdy white envelopes made from heavy 24 pound paper stock, with security lining to keep your private information private. There is an area on the front for your return address, and moist and seal pointed flaps for easy sealing. Top Flight has what it takes to move to the head of the class. Whether you're a parent, teacher, student or business professional, Top Flight has something for everyone.