Vintage Tupperware Rectangle 9x13 Cake Keeper Carrier w/ Lid No Handle Cleaned and sanitized then washed with soap and water.  The top has yellowed with age but the whole item still seals well and is quite funtional This Vintage Tupperware Rectangle 9x13 Cake Keeper Carrier with Lid is a classic and durable storage solution for cakes and pastries. Made of white plastic with a solid pattern, this cake saver is designed to keep your baked goods fresh for longer periods. The rectangle shape and standard size make it suitable for all occasions. The reusable feature and vintage charm add to its appeal, while the Tupperware brand ensures quality and reliability. Perfect for transporting and storing cakes in the kitchen or for collecting nostalgic baking accessories.