How to check the authenticity of s45 is as follows:

1. Look at the fabric. The fabric is mostly made of more than 90% cotton plus spandex, which is commonly known as fine cotton. It feels very good. It can be restored to its original shape after being wrinkled and hung up. The color will not be very bright, and it may even look a bit old, but it will not pill or fade no matter how you wash it. On the contrary, cotton fabrics with too bright colors are likely to have excessive formaldehyde content. ;

2. Look at the trademark. Looking at the trademark is the most intuitive way to identify it. Genuine clothing usually comes with finely printed playing cards, which indicate the brand, fabric, specifications, washing instructions, etc., and the inside of the clothing. Washing belts, ingredient labels, etc. are also indispensable. The trademark should be woven and should not be printed. In addition to the trademark sewn on the collar, there will also be a temporary one sewn on the left cuff.