I launch sky lanterns with my kids each Halloween. These were the worst ones that I've ever used. They ripped easily and several couldn't be used. Others failed to launch and had to be extinguished or started to float and then fell to the ground shortly after launch...a very disappointing purchase.
I purchase Chinese lanterns every year to release in honor of my mother and these lanterns were the worst. We took 4 with us to light and only 1 would light up, the other 3 were duds. The one that did light up took the whole lantern up in flames and we had to put out with water. We did not get to release any at my mother's grave. These lanterns are a piece of garbage.
These are the worst lanterns I ever bought. They are old, faded and have tears in them. The fuel block does not attach easily. Would not recommend. Lanterns do not fly well unless you tape all the little tears.