Boater
A boater (also straw boater, basher, skimmer, The English Panama, cady, katie, canotier, somer, or sennit hat) is a semi-formal summer hat for men, which was popularised in the late 19th century and early 20th century. It is normally made of stiff sennit straw and has a stiff flat crown and brim, typically with a solid or striped grosgrain ribbon around the crown.