Zeal X White Kraft Paper Mailer with window envelope bag, using high-quality white kraft paper, kraft paper non-toxic, tasteless, pollution-free, is currently one of the most popular environmental protection packaging materials in the world. The envelope is also designed with Windows to facilitate barcode scanning of the contents. Mail bags are easy to peel off and seal with a strong flap adhesive that doesn't lick glue or water when wet, making it faster and easier when you pack. Kraft paper envelopes can choose different grams of kraft paper to produce, tear resistance and flexibility will be different, you can choose the weight of raw materials according to the actual use of the situation, customize more suitable for your products. And more importantly, the brown paper printing pattern or logo effect will be better, more high-definition, and can deepen your customers' impression of your brand.