Size S: Brim: 2.4 inches (6 cm), Height: 3.9 inches (10 cm), Inner Circumference: 21.3 - 21.7 inches (5 Size M: Brim: 2.4 inches (6 cm), Height: 3.9 inches (10 cm), Inner Circumference: 22.0 - 22.4 inches (5 Size L: Brim: 2.4 inches (6 cm), Height: 5.1 inches (13 cm), Inner Circumference: 22.8 - 23.2 inches (5 Size XL: Brim: 2.6 inches (6.5 cm), Height: 5.3 inches (13.5 cm), Inner Circumference: 23.6 - 24.0 inches (60 - 6