Customize your mailers with what you want on them. They include one-sided printing in any color or color combination. If you want double sided printing please contact me for pricing. They are a great way to advertise your business & you will love the quality!! You will receive 10"x13" (25.4x38.1cm) in the quantity & color of your choice from the drop down menus. Once you place your order please send me the following through Etsy conversations. If you are unable to attach your image, please send to my email which is cindy [!at] cindyscozycorner.com. 1) Send me your design image. Background must be transparent if you don’t want a white background surrounding the logo & the color in which you want the logo printed. (The better the quality of the image, the clearer the customization will be.) 2) Please tell me where you want the image/logo placed on the mailer (top, center, bottom, side, etc.). 3) Tell me the size you would like the image to be once printed on the mailers. (Images larger than 3.5" may have an additional cost. Please contact me prior to placing your order.) 4) Please check back for questions in Etsy conversations. Perfect for many items such as clothing, accessories & much more. 100% Recyclable Self-Seal Adhesive Strip Water & Tear Resistant Lightweight to save on shipping This lightweight, plastic mailer is approved by USPS. Custom products are not returnable. If you are not satisfied, please contact me. Color varies based on computer settings. Color depicted as accurate as possible. 25-200 Custom Logo 10x13 Color Poly Mailers Self Seal Adhesive Plastic Flat Envelope Bags Shiny Waterproof Shipping Tear Proof Lightweight