Pure cotton seersucker. The button-down collar, a Brooks Brothers innovation, keeps you looking your best. Our signature 6-Pleat Shirring® at the barrel cuffs reinforces Brooks Brothers dedication to a well-made sport shirt. Additional features include a center back pleat, left chest pocket and mother-of-pearl buttons. This shirt is machine washable for easy care. Imported.. The Regent fit is a modern trim fit with chest and sleeves cut slimmer to the body. Also available in Madison fit.