Introverts Unite Occasionally In Small - Introverts T-shirts 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 Introverts Unite Occasionally In Small Groups For Very Limited Perious of Time - Introverts T-shirts Introverts Unite Occasionally In Small Groups For Very Limited Perious of Time - Introverts T-shirts cool shirt, best gift Lightweight, Classic fit, Double-needle sleeve and bottom hem