Polyester pique is a popular fabric for making sportswear as it is lightweight and is also breathable, and has moisture-wicking properties because of the pique weave. Breathability is an issue with a lot of knits because most have synthetic fibers and spandex fivers. Bamboo knits are very comfortable to wear as they are breathable and very soft and absorbs moisture. Jersey knits and other knits made of cotton and rayon fibers are naturally breathable.