Vents have broken off over the years but are included.  See pictures.  The Vintage Tupperware 16oz. One-Handled Container with Vented Lid Set of 2 is a durable and versatile bowl set perfect for various occasions such as school, parties, and casual gatherings. Made of green plastic, these round bowls feature a solid pattern and are stackable for easy storage. With a break-resistant design and microwave-safe capabilities, these Tupperware bowls are both practical and convenient for everyday use. Made in the United States, this original set of two bowls is a nostalgic and collectible piece for any kitchen or home.