Koppen button up shirt size Large Blue and gray plaid short sleeve with mesh This is pre-owned item in good condition. PLEASE SEE PHOTOS AND MEASUREMENTS. Measurements are taken while lying flat and can differ from how YOU choose to measure your items at home. Chest (armpit - armpit) = 22.5" approx Shoulder to shoulder = 17.5" Height (back bottom collar to bottom hem) = 30.25" Compare provided measurements to an item you own to ensure proper fit . Not all companies size or fit the same. Companies can also change their sizing standards over time. Ships quickly. Please contact with any unaddressed questions.