This button-up St. Pat's shirt is designed for the time of year when Guinness starts to flow, and everyone goes out to paint the town green in honor of St. Patrick's Day. This year can join all the Shenanigans in style with this stylish green shirt. SM = Neck: 14.8", Chest: 20.8", Sleeve: 25.4" MD = Neck: 15.6", Chest: 22", Sleeve: 25.8" LG = Neck: 16.3", Chest: 23.4", Sleeve: 26" XL = Neck: 17.1", Chest: 24.8", Sleeve: 26.2" 2XL = Neck: 17.9", Chest: 26.3", Sleeve: 26.4"