Traditional Reiss suiting gets a warm-weather update with the slim-fit Rex. This long-sleeve option is cut from white linen for a lightweight, breathable wear. A cutaway collar and button-front closure complete the look. Tuck into a pair of tailored trousers for office moments, or choose shorts for a smart-casual holiday edit. Linen. Cutaway collar. Button front closure. Long sleeves. Buttoned cuffs. Slim fit.