This is 25 count bag of Chrome Purple 11" latex balloons from Qualatex.
Size and shape: 11" Round
Color: Chrome® Purple
Package count: 25
Package item №: 58280
Package item price code: LCX
Inflated diameter in inches (cm): 23cm
Gas capacity in cu. ft. (m³): 0.5 (0.015)
Average number per 242 cu. ft. tank: 484.0
From Qualatex.