Shirt, size M (46 European), "Biba" Made in Poland, long or short sleeve options

Shirt, size M (46 European), "Biba" Made in Poland, 95% cotton, 5% elastane. Pit to pit 21 inches. Cotton shirt with some stretch. It has a button on the sleeve and a thin strap inside the sleeve to have an option to roll up the sleeve to have a short sleeve. Please see the last 2 pictures.