100% Cotton Imported 100% Cotton Officially Licensed by MLB Unisex - Adult One size fits most with Adjustable Strap on Back (Not Recommended for head size >7.5") Embroidered Team Logo on Front with Team Name embroidery left side of bill Pre-washed for a broken in feel. Low Profile with Curved Bill Sport your Old School Red Sox Team Pride and make a fashion statement with this great looking Clean Up Hat. Officially Licensed by MLB