Preshrunk t-shirt in 100% cotton. Sport Grey:  90% US Cotton / 10% PolyesterDark Heather: 50% US Cotton / 50% PolyesterSeamless twin needle 7/8" collar. Taped neck and shoulders. Rolled forward shoulders for better fit. Twin needle sleeve and bottom hems. Quarter-turned to eliminate centre crease.Care Instruction:Machine wash at max. 30ºC/86ºF with short spin cycle, inside out with like colorsDo not use bleachDo not ironDo not dry cleanDo not tumble dry