About The Brand: Theory Believes The Perfect Outfit Can Change The Way You Feel. For Over 25 Years, Theory Has Developed Innovative Fabrics And Highly Functional Pieces That Feel Great And Fit Perfectly. Theory's Seasonal Collections Are Versatile, Expertly Tailored And Easy-To Wear. Sheer Stripe Sweater In Black 62% Viscose 21% Cotton 13% Polyester 4% Nylon; Dry Clean Only Imported