Theory Karenia Cashmere Sweater in Beige. - size S (also in XS) Theory Karenia Cashmere Sweater in Beige. - size S (also in XS) 100% cashmere. Hand wash cold. Mock neck. Mid-weight knit fabric. Rib knit trim. Side slits at hem. Imported. THEO-WK248. K0918705. 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.