The envelopes are white in color, with an adhesive strip. The inside of the envelope is black, so the contents of the envelope are not visible. It is also an excellent protection against moisture, which makes these envelopes suitable for safe shipping of clothes, materials, paper and other items. Very light, saving on shipping costs. Strong seams allow the envelope to be packed full, and the labels stick to the envelope very easily. Made from only the best quality raw materials and containing at least 70% recycled materials.