We are the official seller of NELEUS on Walmart. When purchasing please check out the NELEUS brand store you can see more NELEUS products here: https://www.walmart.com/brand/neleus/10002162 If you have any doubts before purchasing or about the after-sales problems after purchasing please feel free to contact us. Please refer to our size chart to select the appropriate size. Our products size follow the ?US size? on our product label. NELEUS Womens High Waist Ankle Yoga Leggings is made of 85% Polyester and 15% spandex. It is made of super soft skin-friendly fabric with excellent moisture absorption and sweat removal. It can keep comfortable and dry all day even during exercise. The use of four-way elastic fabric super elastic slim-fit can promote compression and support but also provide greater freedom of movement movement is not restricted perfect for yoga jogging fitness exercise and other occasions.