HOUSTON – Red Solo cups are ubiquitous, a party staple that everyone knows -- but did you know the indentation lines on the side of the cups are measurements? What’s the real use for the lines on the original Solo® Cup? Here are some fun suggestions from us, but we want to know yours. Posted by SOLO on Wednesday, June 13, 2012Check out the graphic on Amy Davis’ Facebook page – a great resource for fun posts about consumer-related topics. Be sure to like her page today for all of her expert updates.