Other insignia include the processional cross, and the episcopal mitre and crosier. Rooks feature stylised crenellated battlements and bishops a Western-style mitre. The zucchetto is always worn beneath the mitre or the biretta. Sometimes he is depicted wearing the Eastern Orthodox mitre, sometimes he is bareheaded. The mitral valve is named after the mitre of a bishop, which resembles its flaps. The 2018 Gala had a Roman Catholic theme, and included Rihanna wearing a papal mitre. This word has been translated as "mitre" (KJV) or "headdress". Mitre, Joma and Asics joined the fray. "Mitra papalis" is a type of conch named after the papal mitre for its form. The word "mitral" comes from Latin, meaning "shaped like a mitre" (bishop's hat). Their previous kit sponsors are Adidas, Reebok, Nike, Vilour, Diadora, Joma, Mitre, and League. These latter units were dressed in blue with low mitre caps. Benedict broke with tradition to substitute a mitre in his arms. The project was resisted by Domingo Faustino Sarmiento, who began his conflicts with Mitre. The home run traveled and was hit off Sergio Mitre of the Florida Marlins.