Cotton is a breathable material and can be made from a variety of materials, like cotton, polyester blends, and polyester blends are more lightweight, and easy to print on. Other materials include cotton, polyester, spandex, where other materials are needed. Cotton is a kind of cotton-bamboo blends, and other blends are more lightweight and can be used in underwears.
Generally speaking, the boys' underwear are made from different materials including cotton, polyester, spandex. Spandex is lightweight and used in plastics.