New! NBA Boston Celtics Multi-Color Flatbill Fitted Hat - 3D Embroidered Cap - 7 New! NBA Boston Celtics Multi-Color Flatbill Fitted Hat - 3D Embroidered Cap - 7 Authentic NBA Headwear Beautifully crafted with a cotton blends and with double needle stitching by Reebok Headwear. Adult Size Fitted Hat 7 Officially Licensed Product.