【Size & Material】 12.9 x 9.2 (Usable Size: 11x 8.5) with opaque teal poly film, each pack contains 30 lined mailers
【Shipping Protection】 8.5 x 11 shipping envelopes are made of 5 layers polyethylene sheets. So the outer layer of this product is inflexible so it keeps the items from folding and bending. The padded envelopes provide excellent protection for shipment
【Self-adhesive Seal】 The sticky adhesive on the fold-over flap. Once the cushioned envelope has been sealed, it cannot be opened without visible signs of tampering
【Features】 Poly bubble mailers are waterproof, dustproof, shockproof, resistant to puncture or tears. Make sure your shipment is completely safe
【Light Weight Mailers】 The smooth surface of the mailers makes it easy to stick stamps and address labels. Light weight will make transportation easier. So the bubble mailers are the best product for transporting, shipping, mailing, storing fragile and light items