Cordobes hat made in polyfibre felt (in synthetic fibre and resin, 2.5 mm in thickness). It has a maximum resistance to light and is especially resistant to moisture. Available in red and black.
Approximate measurements:

Hat's inside measurements
Size 52 - (49-52 cm) for children
Size 54 - (53-55 cm) for children
Size 56 - (55-57 cm) for teenagers
Size 58 - (57-59 cm) for women
Size 60 - (59-61 cm) for men

Very important. To know your size you should use a tape measure to determine the circumference of your head above your eyebrows and ears.