BARCONIC6" Straws - Black

Does "jumbo" mean about 1/4" for the inner diameter. Not skinny stirrer size?

are they truly 6 inches? I received from another seller where the size AND quantity were wrong (8", 500ct instead of 7", 1000ct)

Hi. Are these exactly 6" or are they 5.75"?

paper or plastic? Not mentioned in description