Empress PET cups and lids are made from an extremely clear, durable and tough material. PET is an odor and flavor resistant thermoplastic resin, meaning they can maintain the original flavor and aroma of food and beverages placed in them. PET cups are freeze, heat and crack resistant, which helps make them one of the most popular plastic materials in the market. Empress PET cups are available in 8 different sizes, ranging from 9 to 32 ounces, and offer even more merchandising options with flat, straw slotted and dome lids.