Sizing is listed in Italian sizesIn general, the Sara Roka fit is slightly generous. If you are in between sizes, buying the smaller size is recommended.Product Details:Sara Roka Bella Poplin Button-Up with Bell Sleeves.CollaredBell-sleevesRound hemMade in Italy78% Cotton, 18% Polyamide, 4% ElastaneAbout the Brand:Originating in Canada, and inspired by life, people, and the environment around her, Sara Roka has designed around the world and her pieces show her life in the US and current home in Italy. Sara trained under Michael Kors and Valentino. The luxurious cotton fabrics available in Italy, such as poplin and oxford, the wonderful trims and details, and exceptional craftsmanship naturally led Sara to creatively design a collection consisting of innovative and sexy blouses, dresses, and tops, while maintaining the essence of the timeless men’s classic shirt.