Common clothes courier bags have the following three types:
1. Small courier bags refer to courier bags with a length of less than 30 cm and a width of less than 40 cm.
2. The medium-sized express bag refers to the express bag with a length of about 45 cm and a width of about 35 cm.
3. Large express bags refer to express bags with a length of more than 50 cm and a width of more than 55 cm.
