Progo 15 ct #7 Extra Large Poly Bubble Mailers 14.5x19 Inch Bubble Lined Cushioned Poly Mailer. Tear-proof, Water-resistant and Postage-saving Lightweight Shipping Padded Envelopes/Bags. : Amazon.ca: Office Products
How do I calculate how many stamps to use on a ReadyPost bubble mailer? I was told I could ship these across the country for under $5 each at the post office