The product is a lot of 56 USPS Ready Post 6-3/8” x 8-3/4” red bubble mailer envelopes. These self-stick envelopes are made in the United States by the brand Ready Post. They are ideal for packaging and shipping products, providing a secure and padded option for sending items through the mail. The size of the envelopes allows for efficient use of space when packaging multiple items. Perfect for businesses and individuals needing to ship a large quantity of items with added protection. 52 Red and 4 pink design.