Back Off I Have A Sister And I'm Not Afraid To Use Her Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Back Off I Have A Sister And I'm Not Afraid To Use Her T-Shirt Back Off I Have a Sister I'm not afraid to use her Shirt Lightweight, Classic fit, Double-needle sleeve and bottom hem