Yoga pants were originally worn when practicing yoga exercises only. Around 2007 women began to wear yoga pants on the street. Yoga pants are generally made of cotton, spandex, nylon, polyester or a light and stretchy synthetic material. They are usually tight-fitted, colored black, and have an elastic waistband folded over at the top.There are various types and styles of yoga pants. These include the boot cut and flared yoga pants. The boot cut and flared remains the most popular type of yoga pants that is generally used for casual wear and for physical activities. Some yoga pants turn seethrough when stretched, e.g. around her ass area.
Because of the tight fit on her ass and potential see-through opportunities women wearing yoga pants on the street are subject to street voyeurism.