Zack & Zoey Button Candy Polo Dresses for Dogs. Colorful accents make our Zack & Zoey Button Polo Dresses for dogs a swinging sensation. An easy-fit design made of machine-washable polycotton. A lightweight, mod look dress with a drop-waist skirt that swings. Colorful button candy pattern on the neck, sleeves, and belted waist. Material: 65% Polyester, 35% Cotton. Care: Machine wash cold on a gentle cycle. Line dry.