2 The Tupperware 3752d-3 Blue sandwich keeper is a hinged clamshell locking container designed for keeping sandwiches fresh and secure. Made by the trusted brand Tupperware, this sandwich keeper in a vibrant blue color is perfect for storing and transporting sandwiches for lunch or picnics. Its a convenient and practical item for kitchen storage and organization, ensuring that your sandwiches stay fresh and ready to eat. Thank you for looking.