According to the needs of courier companies, there are three common courier bags. The types of bags are as follows: large width 45cm* total length 60cm, medium width 38cm* total length 52cm, small width 28cm* total length 42cm (including sealed 5cm or 4cm).

Extended data:

Express bag refers to the bag used to package documents, documents, materials and goods in the express delivery industry. Also known as express bag, mail bag and express packaging bag.

At present, polyethylene plastic courier bags are widely used, which have the characteristics of low cost, convenient use and good waterproof performance.

In addition to the use of customized courier bags by major courier companies, there is also the online shopping industry. Many merchants customize their own courier bags in order to give customers a good image, enhance their image and play a propaganda role.

Courier bags are divided into plastic bags, document bags, bubble bags, bone bags and woven bags according to materials.

Courier bags are classified according to raw materials: brand-new courier bags, semi-new courier bags and recycled courier bags.

Express bags are classified according to whether they are printed or not: printed express bags and non-printed express bags.