The Packaging Wholesalers 14-1/4 x 20 Inches Bubble Lined Self-Seal Poly Mailer, 50 per Case (ENVB837) 14.5"x20" Mailing Envelope 3/16 Inch bubble lining cushions products during shipment. Mailers feature a convenient peel and seal closure. Smooth exterior makes labeling easy Moisture, Tear and Tamper resistant