Spanx The Slim-X Skinny Slimming Jeans 96% Cotton, 3% Polyester, 1% LYCRA elastane. Machine wash cold with like colors inside out. Do not bleach. Tumble dry low. Warm iron if needed. Slimming system by Spanx acts like a hidden shaper Triple Thread fabric technology made with an extra stretch yarn to provide the ultimate comfort and body-contouring fit Curve contouring design and a gape free waist Perfect pocket placement that gives a perky look in the back