Boat socks are very short socks, so short that you can't see the socks or only the edges of the socks after wearing the shoes. The material is cotton, and the material is cotton, not pure cotton. The name "boat socks" is because the shape of the socks is like a boat. Because the length is up to the ankle, they are also called "ankle socks" or "boat socks". In Taiwan, they are mostly called "invisible socks" because they are worn Socks are usually not visible behind the shoes.
Gradient socks are socks that gradually change from one color to another from the middle. There are gradient socks and leggings. Gradient socks evolved from gradual color hair. Gradient color refers to the color of an object, the color that is softly saturated, from light to dark, or from dark to light, or from one color to another, full of mysterious and romantic atmosphere. Gradient color, a popular color in the hairdressing industry, is a special hair dyeing effect that uses the blend of hair dye cream to make a color change from the root to the tip of the hair.