What significant packaging design change did Pringles implement in 2020-2021 as part of their sustainability efforts?

Packaging design is often a key element of a food product's identity and success in the marketplace. Some iconic food packaging designs have become as recognizable as the products themselves, evolving over time while maintaining their core identity. This poll tests your knowledge about one of the most distinctive packaging designs in snack food history - the Pringles container, which revolutionized chip packaging with its unique tubular design.

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They switched from their iconic tube to a biodegradable bag
They redesigned their tube to be 100% recyclable by changing the material composition
They eliminated the plastic cap and replaced it with a paper seal
They reduced the height of the tube by 25% while maintaining the same amount of chips