Reebok San Francisco 49ers Patrick Willis Authentic Jersey 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 Sleeve decoration, when applicable, is either printed or knit (specific to team) Single- or multiple-layer dyed tackle twill or fabric player name and number Embroidered team wordmarks and logos NFL&reg; Equipment patch sewn on the bottom of front collar or fabric insert NFL&reg; Equipment jock tag with numeric sizing is applied above left hem Reebok&reg; logo embroidered on each sleeve