25" under arm to under arm 18.5" back shoulder width Upgrade your wardrobe with this stylish Polo Ralph Lauren Polo Shirt. The shirt features a heathered blue 100% cotton knit fabric, making it lightweight, breathable, and perfect for all seasons. The short-sleeved collared shirt has a spread collar style with pullover closure, making it easy to wear for any occasion, whether it's casual, business, or activewear. The XL size shirt fits regular and is perfect for men. The solid pattern adds a touch of designer style to the classic USA-inspired shirt. This Polo Ralph Lauren Polo Shirt is ideal for summer, fall, and spring, and is suitable for sports like rugby and golf. It is machine washable and has exceptional quality. Add this shirt to your collection now!