It is made of 88% polyester and 12% spandex. This blend gives the garment a four-way stretch which allows the fabric to stretch both width- and length-wise. The garment has a slight tapering along the outer thigh to provide that signature straightened appearance. 
 
Sizes run small, consider ordering one size up.
 
Material: 88% polyester, 12% spandex
Elastic waistband
Mid-waist slim fit