The Pegasus Envelopes are 6 1/2″ square and made of 70# Midnight Black stock, featuring a sturdy construction for reliable shipping and handling. This carton of 1000 envelopes is perfect for businesses and industrial use, providing a sleek and professional appearance for any package. With the trusted brand of Pegasus, you can be confident in the quality and performance of these envelopes for all your mailing needs. Regular price of $453.00.