Finding the right sized mailing bag or box to fit your package can sometimes be a frustrating struggle, with some being a little too big, and others being a little too small. You no longer have to struggle with COS huge array of different boxes and satchels. We love sustainability at COS, and we know that a lot of business are making a conscious effort to use environmentally friendly products, which is why we’ve made it easier for you to do so! You no longer have to feel bad about the number of letters going into your outbox, as we offer EnviroMail envelopes and recycled envelopes to help you help the environment. If EnviroMail isn’t quite what you’re looking for, then choose from a range of different brands, including; Australian Envelopes, Australia Post Satchels, Candida, Colby, Cumberland, Marbig, Tudor and Zions. Browse this category for a range of reliable and high-quality boxes and tubes.