Also found in Boston Celtics NBA Hats New Era Boston Celtics Authentic and ORIGINAL 59Fifty wool blend fitted hat by New Era. '2T TEAM-BASIC' has black crown with kelly green visor and light grey undervisor, raised embroidered primary team logo on front in team colors, matching embroidered HWC logo on back . These 2T TEAM-BASICs are authentic Boston Celtics hats made by New Era for official NBA - National Basketball Association teams.