THIS TEE IS MADE OF 100% PRE-SHRUNK COTTON. ASH HEATHER AND OATMEAL HEATHER ARE 99% COTTON/1% POLYESTER. ATHLETIC HEATHER IS 90% COTTON/10% POLYESTER, AND GRAPHITE HEATHER IS 70% COTTON/30% POLYESTER. CHARCOAL HEATHER, DENIM HEATHER, ROYAL HEATHER, KELLY HEATHER, SAFETY GREEN, CORAL HEATHER, SAFETY ORANGE, SAFETY PINK, RED HEATHER AND BROWN HEATHER ARE 50% COTTON/50% POLYESTER. COMPLIES WITH ANSI, CPSIA.