In many parts of the country, it can be very chilly on St. Patrick's Day so stay warm with this flag inspired Irish knit hat! This St. Patrick's Day Irish knit hat features the three colors of the Irish flag: orange, green, and white. The Irish knit hat is even more festive with its green shamrocks accenting the Irish flag colors. This style of Irish knit hat is called a 'beanie' or a 'skull cap' which is a very popular style. While a Irish knit hat beanie can certainly keep you warm, it is not too heavy to be worn inside or in slightly warmer climates. The St. Patrick's Day Irish knit hat is appropriate for every day wear by those who don't want to limit their Irish boasting to March 17. The orange, green, and white Irish knit hat measures 8-1/2 inches.