This is a great water ballon solution! I am usually the ballon filler as like most parents, and I like to give my kids all the time to enjoy playing on day when it is warm enough to enjoy these. I will be buying exclusively these balloons from here on out, they like advertised fill quickly, and detach fine, also they account for any defective ballons a by giving I think 5 extra in every pack. I'm able to fill a hundred ballons in minutes and enjoy all the fun with them with zero of the previous hand hurt and time I used to expect with any water ballon experience. Buy buy buy this you will not be dissapointed. My only critique would be that the ballons don't fill to the point where they break on impact, some bounce off and bust on the floor BUT we found more creative games to play with them because the ballon is more sturdy than you average dollar store water ballons.
Here is a tip we have found to be useful - Do it over water and before overfilling, slightly shake them off the straws. Awesome Purchase!