Banana Republic Chambray Polka Dot Trench Coat SIZE Small. A forever-favorite trench coat in classic, crisp 100% cotton chambray with tonal polka dots for a fresh, fun spin on this modern classic. Wide, rounded point collar with button-tab closure. Long sleeves with button-tab cuffs. Concealed button front closure. Belt at waist. Angled welt front pockets. Inverted box pleat at back for ease of movement. Fully lined. VGUC. Cross posted. From a pet-free, smoke-free home.