64% cotton 21% nylon 15% spandex. Elastic waist. Seamless smoothing for flawless butt, thighs and legs. Tummy-targeted slimming flattens the belly. Firms back of thighs. Non-binding leg band keeps pants in place. SPAN-WP1. 1064A. Smooth, slim, shape, and lift with SPANX, the ultimate wardrobe problem solver fromSara Blakely. With a full range of body-shaping innovations, SPANX provides the perfect undergarments for a blemish-free silhouette.