Twice as strong as paper envelopes, the Self Seal Tyvek First Class Mailing Envelope - TF0912 resist tears, rips and punctures, ensuring your documents are delivered safely. Ultimate durability: Tyvek envelopes resist rips and tears, protecting papers inside No-worry security: Self-seal saves time and makes mailing easier, plus envelopes have First-Class Mail labeling
SIZE: 9 x 12"
