L size looks like S size, I didn't have a good experience with UPS workers, I showed the code on my phone after reading the Revain return guide. to a dead printing press in my house. When I went there she told me that another UPS shop could accept the code but not here, you have to print the label on the package. I didn't have time to explain. I felt really bad with the UPS staff, I decided to keep it even though it was useless for my needs, maybe I will give it to my little cousin