What are the requirements for a pair of qualified non-slip socks?

First of all, it depends on the size, shape and skin feel of the cycling socks. Seam position, workmanship, thread correction, etc.
Second observe the contractility of the ostium position. The internal quality inspection generally spreads the opening and shrinks to observe whether it has recovered well. Of course, you should also pay attention to whether the contraction of the lower opening is too much, otherwise you will feel a sense of restraint when wearing it.
The third is the fineness of the stitching process. When observing, you can pull down slightly with your hands, but not too large, and see if the sutures are clearly visible.
Fourth, look at the dispensing material at the bottom, whether the layout is uniform, and how the grounding is.
The elasticity of the opening should be appropriate, whether the color difference of the suture is serious and obvious, and whether the thread end is clean and neat. Whether the anti-skid dispensing is uniform or not is a fine point that determines whether the sock is qualified or not.
In many official competitions, athletes wear pure white outdoor running socks. Because white is an intermediate color, it never goes out of style and is more eye-catching than the same intermediate black. In addition, pure white socks make people pay more attention to the hygiene of the socks themselves.