Reebok B.J Raji Green Bay Packers Green Authentic Jersey Size 52 Body: 100% 6-oz polyester pro brite, diamond back, or stretchaire mesh (varies by team) Sleeves/Yoke: 100% 6-oz polyester metallic plus dazzle, duratalic, or lycratalic (varies by team) Collar/Cuffs/Sleeve Inserts: 100% 10-oz polyester rib knit (specific to team) Engineered and constructed to replicate the game-day Pro Cut jersey in fabric, trims, team logos and sleeve art Officially licensed