Foam cup are better than plastic when it comes to smoothies, slushes, hot drinks and and more. Look for the perfect lid to meet your needs when you order the 32 ounce foam cups. The slotted cup allows for you to be able to use a straw with your lid. The sipper allows for small sips of a hot drink. The vented allows your drink to be able to cool off while you work and keeps grime and filth out of the drink.