4.5 OUNCE 100 PERCENT POLYESTER AQUAFX MOISTURE WICKING FRESHCARE ANTI-ODOR PROPERTIES. HEAT TRANSFER LABEL. RIB KNIT 3/4 NON-TOPSTITCHED COLLAR. DOUBLE-NEEDLE SLEEVES AND HEM. SAFETY GREEN IS COMPLIANT WITH ANSI/ISEA 107 HIGH VISIBILITY STANDARDS FOR BACKGROUND COLOR.