"These are cute, but when I had them filled with helium they ALL leaked and quickly deflated. I was so disappointed and we couldn't use them. Waste OF MONEY. I didn't have them filled until just before the party, then it is too late to do anything about it. Total bummer."
"these are great. The kids at the party loved them and the sound was easy to make and loud. Better than wooden train whistles. 1 of ours did come broken, but luckily, I didn't have to use it."