Peter Millar Sport Shirt Peter Millar button down shirts always make a great first impression. Try this more relaxed plaid patterned yellow and blue surf Peter Millar summer comfort button down shirt tucked or untucked for a stylish but casual evening outfit. The 100% cotton blend gives this button down shirt a soft feel and showcases how great a Peter Millar shirt truly is. Featuring a French placket, chest pocket, and soft, light-stretch fabric, this comfortable shirt can be worn for nearly all occasions.