Switory Padded Envelopes A6 Bubble Mailers Packaging Bags 50pcs 4X7In Poly Bubble Mailers,Black Small Envelopes Bubble Envelopes,Bubble Lined Wrap Poly Mailers Bags for Shipping Mailing 10.2x17.7cmBlack Bubble MailersUsable Size: 4 x 7, pack of 50. These small bubble envelopes mailers add a pop of color to the mail and stands out from the rest, quite different from the standard one. Your customers will look forward to that charming blackenvelope in the mail. Those cute packing padded mailers are lightweight mailing envelops,. Tear Resistance EnvelopesThis padded package envelopes are with durable and sturdy surface, work great instead of paper