Care Instructions: Machine Wash Warm, Wash Dark Colours Separately, Do Not Bleach, Tumble Dry Low, Warm Iron. Style: Regular. Pattern: Checkered. Sleeve Type: Full Sleeve. A men's regular fit formal shirt is a wardrobe staple that is versatile and timeless. Made from high-quality materials, such as cotton or linen, these shirts are designed to be comfortable and breathable, making them ideal for long hours at work or formal events. With a classic collar, button-up front, and long sleeves, they provide a polished and professional look that is perfect for any occasion.