Measurements: - Under Arm to Under Arm: 29" - Top of Shoulder to Bottom: 36" Please compare measurements to something you own to ensure a proper fit. The Under Armour The Performance Polo Golf Shirt in 3XLT size features a collared neckline, button closure, and short sleeves, making it perfect for travel, activewear, and casual occasions. Made of a blended fabric of polyester and spandex, this lightweight and breathable shirt is designed with a stretch fit for comfort and mobility. The green navy striped pattern adds a classic touch to this sporty polo, suitable for summer, fall, and spring seasons. Machine washable and featuring the Under Armour logo accent, this polo is a great addition to any man's wardrobe, especially for those who enjoy golfing.