These polypropylene cups are made of durable, crack-resistant plastic. The sturdy base helps prevent spillage and the cup fits easily in a car cup holder. They are strong enough for both dining in and taking beverages on-the-go. Cup Type: Cold Cup; Interior Volume Capacity: 16 oz; Material(s): Polypropylene (PP); Material Type: Plastic. • Crack-resistant. • Sturdy base prevents spillage and fits easily in car cup holders. • Strong enough for both dining in and traveling. • Clear design allows for easy beverage identification.