Untuckit Button Up Shirt Mens XL. Orange Blue Plaid Long Sleeve Regular Fit. Pre-Owned Excellent condition Smoke Free Home. The Untuckit Button Up Shirt in Men's XL features a classic orange and blue plaid pattern, perfect for a casual yet put-together look. Made of 100% cotton with a knit fabric type, this long sleeve shirt is machine washable and easy to care for. The regular fit and spread collar style offer comfort and sophistication, making it a versatile addition to any man's wardrobe. The button-up closure and slim fit features of the UNTUCKit brand ensure a timeless and stylish appearance.