Soccer referees have not historically needed to wear hats or sunglasses and AYSO referees are discouraged from doing so. Hats, in some cases, may be desired for sun-protection health reasons. Use of hats on cloudy days should be avoided. Hats should not be worn for night games.
Hats, if worn, should be solid black or predominately black with white trim, or solid white or predominately white with black trim. Hats should bear no logos or slogans other than AYSO logos (traditional, promotional, Regional or tournament) and AYSO national sponsor logos.
Sunglasses are likewise discouraged for referees as this restricts communication through eye contact with players and are generally considered unnecessary adornment.