This Staples Poly Zip Check Envelope Letter Size 2-Pack is perfect for anyone in need of a reliable and efficient mailing solution. Made by Staples, a trusted brand in the industry, these envelopes are designed for unit type packing and shipping. The envelopes are manufactured in China and come in a unit quantity of 2. They are ideal for use in various business and industrial settings, as well as for personal use. The category for these envelopes is under “Other Envelopes & Mailers” and “Envelopes & Mailers” in the packing and shipping section.