What is spandex? Spandex is actually polyurethane. The composition is 95% cotton and 5% spandex, which is the same as LYCRA with highly elastic, and used in all kinds of underwear, swimsuits and jeans.
Spandex, also known as Lycra, is a stretch fiber developed by DUPONT in 1959.It has a very strong elasticity, and stretching up to 500%, also can be back to the original, more powerful than rubber, and more durable.When it first came out, it revolutionized many areas of the clothing industry.
The spandex fabric is less used to make general clothing .In North America, it's used less on men's clothes than on women's .Because women's clothes require more fitting.Other fibers such as cotton and polyester blended to minimize the luster when used.