Tyvek Expansion Mailer, First Class, 10 x 13 x 1 1/2, White, 18lb, 100/Carton
Featherweight, moisture- and rip-resistant Tyvek® mailer 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. Envelope Size: 10 x 13; Envelope/Mailer Type: Expansion Mailer; Closure: Self-Adhesive.