1, label, the real 2 1 solid short sleeve has a special label with information such as military name, size and production year, and the label should be clear and easy to read. If the label is ambiguous or the information on the label is wrong, it is a fake.

2, workmanship, 2 1 entity short-sleeved workmanship should be very fine, the stitches should be neat, there is no damage and excess thread, and the zipper should be smooth and easy to pull. If the clothes are rough or have obvious defects, they are also fakes.