Choice of size: The size specification of slouch socks is based on the size of the bottom of the sock (the part from the heel to the tip of the sock) as the standard. The general size is marked on the label. It is better to choose the same or slightly larger size according to the length of the foot, and it is not suitable to choose a small size.

Quality selection: According to the internal quality and appearance quality, slouch socks are divided into first-class products, second-class products, third-class products (all qualified products) and inferior products. Generally, first-class products are selected, and second-class and third-class products can also be used when the requirements are not high.

The selected slouch socks should have a large heel and a bag shape that is as close to the shape of a person's foot as possible. The size of the heel of the socks will cause the sock tube to sag after wearing, and the sock heel will slide to the bottom of the sock. You can't try it on when purchasing, just fold the sock top and sock bottom in half from the center line. Generally, the ratio of sock top to sock heel is 2:3.

Check the density and elasticity of the opening of the socks: the density of the opening of the socks should be large, double the width when stretched horizontally, and have good recovery. Its elasticity is small, and it is not easy to reset when pulled horizontally, which is also one of the reasons why slouch socks slip.