Why Do Red Solo Cups Have 'Measuring Lines'?

Rumor: The lines on red Solo party cups are designed for measuring servings of various kinds of alcohol.
The lines on red Solo cups are markings to designate serving sizes of various kinds of alcohol.

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Why Do Red Solo Cups Have 'Measuring Lines'?

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Affordable goods Solo cup and ball Royalty Free Vector Image - VectorStock, solo cup

Unmatched Value The History Of The Illustrious Red SOLO Cup, solo cups

Unmatched Value The History Of The Illustrious Red SOLO Cup, solo cups

Food Archives, Page 17

Affordable goods Solo cup and ball Royalty Free Vector Image - VectorStock, solo cup

Unmatched Value The History Of The Illustrious Red SOLO Cup, solo cups

Food Archives, Page 17

Solo Cup Company - Wikipedia

Unmatched Value The History Of The Illustrious Red SOLO Cup, solo cups

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Why Do Red Solo Cups Have 'Measuring Lines'?