These are new old stock. 3 Tupperware Burger  Keeper Stack  Containers  + Lid  Lg 5"  for  1/3 lb Hamburgers.  Also great for freezing leftover veggies for soups or other dishes. Makes nice flat ice circles for coolers or freeze your favorite beverage and add to the pitcher so it won't dilute your beverages.  Handy for storing jewelry for travel. Lots of possible uses. Will be listing several Tupperware items over the next few days and will gladly combine multiple items and find best shipping.