The Tupperware Set 4 BIG Impressions 16oz Tumblers with Straw Ready Lids is a set of four round plastic tumblers with a capacity of 16 oz each. The tumblers come with lids and are BPA free, making them suitable for storing and consuming a variety of beverages. The stackable design makes them easy to store and transport, while the original Tupperware brand ensures quality and reliability.