"Mine has held air for over a month. If yo ... " (more)u aren't planning to fill with helium, just message me and I can tell you how to blow up like regular balloon. Great to work with. "
"Thank you! Received them safe and sound thoug ... " (more)h the envelope was a bit mangled. I think they went through the machine despite your non-machinable marking, but they came out all right! Cheers! ;)"