SPANX. OnCore High Waisted Mid Thigh Slimmer is lightweight and powerful, featuring fully bonded front-panels for a tabletop flat stomach and edge-bonded side panels for comfortable squeeze-free slimming. Wear this shaper under skirts and dresses when you want maximum slimming. The leg openings are designed for paper thin smooth transition to the skin. Butt pockets keep your rear in gear – anchors and prevents uni-butt. No more muffin top! High-waisted silhouette streamlines the figure and a double gusset allows you to wear this garment as underwear. 80% Nylon, 20% Spandex/Elastane.