18 inch mylar balloon with printed number 45 cm
Inflatable with both air and helium
These balloons are of professional quality!
They are all equipped with an autostop valve so we invite you to be careful not to over-inflate the balloon because it could burst!
Average duration with helium inflation is 5 days
Average duration with air inflation more than 30 days!
(we remind you that the duration is entirely indicative as it can vary according to temperature changes and care in handling them)