Deluxe Tyvek Envelopes, #13 1-2, Square Flap, Self-adhesive Closure, 10 X 13, White, 100-box

Sturdy Tyvek® material resists moisture, punctures and tears. This lightweight envelope helps reduce shipping costs. Has a smooth design that offers a professional image. Seam Type: Center; Flap Type: Square; Trade Size: #13 1/2; Security Tinted: No.