12 x 16 x 2 Expandable White Tyvek Envelopes Printed First Class w/ Green Border 100/Case

• Made from 18 lb. olefin, ten times stronger than regular paper envelopes.
• Expandable design to accommodate bulky items easily.
• Comes with a convenient self-seal closure.

These expandable white Tyvek envelopes are great for sending bulky items. To use, just open the self - seal closure, put your item inside, and then seal it shut. Make sure your item fits well without forcing it too much to avoid damaging the envelope. When it comes to maintenance, keep them in a dry place. They're tough, but don't expose them to sharp objects that could tear the material. You can use them for first - class mail as they are printed for that purpose. Enjoy using these durable envelopes for your mailing needs!