Please note that these measurements are approximate and based on amateur measurements. Shoulder width (straight line): 53 cm Back length: 69 cm Width (underarm to underarm, straight line): 56 cm Sleeve length (from shoulder): 25 cm 100% Polyester This is a closet clean-out for my son, who is 171 cm tall and of slightly slim build. I am selling items that have been worn only a few times, but please understand that these are used items and may have some minor imperfections. A simple gray short-sleeved shirt with a pocket, size M. - Color: Gray beige - Design: With pocket - Style: Short-sleeved shirt - Back design: Simple - Size: M Thank you for looking.