Spanx Spanx's slip is designed using the label's SmartGrip™ technology, so you won't have to worry about it riding up. It's made to contour your waist, hips and thighs, and has a seamless finish, so it's virtually undetectable beneath even the most form-fitting dresses and skirts. The low scoop neckline accommodates all bust sizes and means you can wear your own bra. Adjust the shoulder straps to find your perfect fit. Wear it with: Chantelle Bra. - Black SmartGrip™ - Slips on - 58% nylon, 42% elastane - Machine wash