Duluth Nylon Poly Blend Short Sleeve Button Down Shirt Mens M Blue Plaid The Duluth Nylon Poly Blend Short Sleeve Button Down Shirt for men in size M features a blue plaid pattern, collared neckline, and short sleeves. Made from a blend of nylon, this shirt is machine washable and has a regular fit. The button-up style and button accents add a classic touch, making it suitable for various outdoor or Hawaiian-themed occasions. With its all-season features, this shirt is a versatile addition to any man's wardrobe.