New Era Chicago White Sox Authentic and ORIGINAL 59FIFTY fitted hat by New Era. 'JMACK ARCH' has black wool front and back panels and visor, grey mid panels and undervisor, large raised embroidered 'City Name' with outline in JMack Classic Arch on front, embroidered team logo on back. These JMACK ARCHs are authentic Chicago White Sox baseball caps made by New Era for official MLB - Major League Baseball teams.