Shell: 95% Polyester, 5% Spandex. Lining: 100% Polyester. Sleeves measure 23 inches for size Small; 23.5 inches for size Medium; 25 inches for size Large. Shoulder span measures 14.5 inches for size small; 15 inches for sizes Medium and Large. Dry clean only. Do not bleach. Do not tumble dry. Cool iron. Fully lined. Imported. This jacket scores a 2.0 out of 5 on our Coat Warmth Scale.