Moisture- and rip-resistant mailer made of DuPont™ Tyvek® delivers heavyweight protection. Expandable design is ideal for shipping bulky contents like books, binders and reports. Flap-Stik® closure provides a secure, peel-and-press seal. Stock up and save! Envelope Size: 10 x 13; Envelope/Mailer Type: Expansion Mailer; Closure: Self-Adhesive; Trade Size: #97.
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