Color — Black Material — 100% Wool, great quality hat! This is medium soft hat, it is NOT stiff. Brim – 2.5″ Sizes available – Medium 22.5 inches / 57 cm. Large 23 inches / 59 cm. XL 23.5 inches / 60 cm. Measurement is made around the inside band of the hat. Use a tape measure to determine the circumference of your head to the nearest 1/8 of an inch by measuring across the widest part of the head, above the eyebrows and ears.