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 kraft 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 Clasp Envelopes are sturdy brown kraft envelopes made from heavy 24 pound paper stock. The envelopes have gummed flaps with a strong clasp closure for extra security. They are perfect for holding, mailing, and transporting confidential documents and other small items. Top Flight has what it takes to move to the head of the class. Whether youre a parent, teacher, student or business professional, Top Flight has something for everyone.