Abstract: The invention refers to a hat (1) comprising: a main hat portion (2); a brim (3); a band (4); a cord (5) attached to attachment zones (7) and (8); a cord (6) attached to attachment zones (9) and (10); a chin strap member (11) connected to the cord (5); a chin strap member (12) connected to the cord (6); locking members (13) and (14); wherein cords (5) and (6) have a cross section substantially circular; the chin strap members (11) and (12) have a slidable movement along the respective outer surfaces of the respective cords (5) and (6); and the chin strap members (11) and (12) are connectable between locking members (13) and (14) and are further adjustable for positioning beneath the chin of the wearer. The technical features of the hat (1) allow it to stay on the head of a wearer during the sports practices, specially water sports.