1. First, check the label. There will be a clear brand logo and washing method on the tag of the authentic northern down jacket vest, and there will be no price tag. If the label is ambiguous or there is a price tag, it is a fake.
2. Secondly, check the collar and armband. The collar and armband of the authentic down jacket vest in the north will have a clear brand logo and size, and the texture of the logo is good. Collars and armbands are blurred or lack of signs, which are all fakes.
3. Finally, check the details. The authentic down jacket vest in the north has fine workmanship, no thread and defects, and the zipper is very smooth. If it is found that the workmanship is rough or there are obvious defects, it is a fake.