Check the listing for details. Tupperware Polar Bear Sandwich Keeper New!. Color: Blue, Condition: New. Listed at 9.84 USD. This Tupperware Polar Bear Sandwich Keeper is an adorable addition to your lunch box. The blue color and polar bear character make it perfect for both kids and adults. It has one compartment to hold your sandwich and measures 2" in height, 4.75" in length, and 5.25" in width. Made by Tupperware, this sandwich box is a high-quality product that will keep your lunch fresh and secure. It is also a collectible item for those who love Tupperware and polar bears. Get this new and unused sandwich keeper to add some fun to your lunch routine.