Tyvek USPS First Class Mailer, 9 1/2 x 12 1/2, White, 100/Box

Lightweight, moisture- and rip-resistant mailers made of DuPont Tyvek help to reduce shipping costs. Clean, crisp look conveys a professional image. Flap-Stik peel-and-press flap seals securely. Envelope Size: 9 1/2 x 12 1/2; Envelope/Mailer Type: Catalog; Closure: Self-Adhesive; Trade Size: #93.

Price: 59.97 from Zuma Office Supply US