Ecomm Poly Mailer Shipping Envelopes Shipping envelope bags in White/Grey with Permanent Adhesive Strip. 2.5mil. sometimes called a "mailer" or a "mailing bag" or a "soft pack". We call these mailers, e-com envelopes, shipping bags, poly mailers. We stock and sell these in Canada. Sold per 100. Poly mailers are made from virgin material, and are recyclable in some Canadian provinces.
