Theory Turtleneck Jumpsuit in Tan. - size XS (also in M, S) Theory Turtleneck Jumpsuit in Tan. - size XS (also in M, S) 88% wool 10% cashmere 2% other fibers. Dry clean only. Partial hidden back zipper closure. Elasticized waistband. Rib trim. Midweight knit fabric. Imported. THEO-WC8. K1111708. Theory is a visionary concept for modern intelligent fashion forward people. Founded in New York and made by the finest of fabrics, this makes the working everyday person feel powerful, ready to face their day.