The Packaging Wholesalers 10 1/2 x 16" 5 Bubble Lined Self-Seal Poly Mailer, 100 per Case (ENVB836) 10.5"x16" 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