10 Pack 4x7 Inch Poly Bubble Mailers #000 Padded Envelopes Black, Poly Mailer

【Size & Material】 4.8 x 8.9 inch (Usable Size: 4 x 7 inch) with opaque black poly film, each pack contains 10 lined mailers

【Shipping Protection】 4 x 7 bubble envelopes are made of 5 layers polyethylene sheets. And 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

【Features】 Poly bubble mailers are waterproof, dustproof, shockproof, resistant to puncture or tears. Make sure your shipment is completely safe

【Self-adhesive Seal】 The sticky adhesive on the fold-over flap. Once the mailing envelope has been sealed, it cannot be opened without visible signs of tampering

【Light Weight Mailers】 The smooth surface of the mailers makes it easy to stick stamps and address labels. Light weight will save more shipping cost. So the bubble mailers are the best product for transporting, shipping, mailing, storing fragile and light items