SPANX The Perfect Pant Back Seam Skinny Ankle Pants in Classic Black. Consider these ankle pants your new go-to for any outfit or occasion thanks to seriously magical smoothing ponte fabric and a comfortable, pull-on design. They have a sleek look, a great fit, and a skinny-leg cut, making them a style so flattering you'll wear them again and again. Size XS Petite. Measurements in photos. Inseam 23 inches. Great condition.