In summer months these days I often wear this combination when I’m on my weekend or vacation: 1.Tan Sperry Top Siders. 2.No socks. 3.Solid light blue or light grey shorts. 4.Solid tan leather belt. 5.Tucked-in solid light blue or light grey shirt. What would you recommend me to choose as a headwear in this case? I can’t really decide if to choose a baseball cap made of cotton/linen or a narrow-rim hat made of straw or paper. Baseball cap looks too casual for my taste yet a rim hat looks a bit pompous.