This pack of 500 white DuPont™ Tyvek envelopes is perfect for shipping clothing and documents. The exterior size of each envelope is 9'' x 12'', with a plain and open end catalog style. The sub 11 weight makes these envelopes extra lightweight, making it easy and affordable to ship multiple items at once. They feature a self-sealing peel and seal closure and are suitable for soft goods packaging. These envelopes are made in the United States and are of high quality. They are perfect for businesses that need to ship items regularly or for personal use.