Crownhill Poly Mailers/Courier Bags. Tamper-resistant mailers are ideal for secure and confidential mailing. Self-sealing style has easy-to-peel adhesive closure. Double-perforated openings for easy opening. Water and tear-resistant. 2.5 mil. 2" lip. These self-sealing courier bags with double-perforated openings are perfect for protecting, shipping and delivering a wide variety of items. Sturdy material is water-resistant and tear-resistant. 2.5 mil bags feature 2" lips and are also lightweight to save postage. General Information Manufacturer:Crownhill Packaging LtdManufacturer Part Number:139360Manufacturer Website Address:http://www.crownhillpackaging.comBrand Name:CrownhillProduct Name:MailerMarketing Information:These self-sealing courier bags with double-perforated openings are perfect for protecting, shipping and delivering a wide variety of items. Sturdy material is water-resistant and tear-resistant. 2.5 mil bags feature 2" lips and are also lightweight to save postage. Packaged Quantity:100 / PackProduct Type:Mailer Product Information Mailer/Envelope Type:ShippingMailer/Envelope Width:14 1/2" (368.30 mm)Mailer/Envelope Length:19" (482.60 mm)Closure Type:Self-sealingFeatures: Tear Strip Moisture Resistant Physical Characteristics Product Color:WhiteThickness:2.50 mil (0.06 mm) Miscellaneous Recycled:NoAssembly Required:NoCountry of Origin:Canada Product Numbers: 139360 747178393608 QUA45235 CWH139360 747178393601