IVL Collective Curve Legging in Black. - size 12 (also in 4, 6, 8) IVL Collective Curve Legging in Black. - size 12 (also in 4, 6, 8) 72% nylon 28% spandex. Made in China. Hand wash. Pull-on styling with elastic waistband. Spandex fabric with contrast side detail. Item not sold as set. IVLR-WP1. IVLC456-01. Shop the latest in fashion from IVL Collective