Big Size Summer Twill Mesh Flexible Fitted Cap - Black (For Big Head) 100% Polyester Made of 60% cotton and 40% polyester. XL/2XL(60-64 cm) and 2XL/3XL(64-67 cm) are available. Please note that this will be too large for an exact size XL (7 1/2 or 23 1/2") person. Crown measures 4 inches high, 6 panels, unconstructed front, low profile. Bill measures 4 inches long, pre curved, same color under bill.