Knitted cotton is elastic, but woven cotton is not. Although it is not so straightforward in the book, this is what I understand. Weaving, also known as "weaving", is a process of forming woven fabrics with yarns as warp and weft according to various fabric structures. It is an important part of textile industry production. Woven cotton has warp and weft yarns, and the fabrics are generally thin.

The process of knitting yarns of various raw materials and varieties into loops with knitting needles and then connecting them into knitted fabrics through a series of sleeves. Knitted fabric has soft texture, good wrinkle resistance and air permeability, high extensibility and elasticity, and is comfortable to wear.

Lycra is not pure spinning, Lycra is spandex.