This is a good product. It's only drawback is that there is only one size of rubber band in the bag. That being said they seem to be of good quality and strength. I would certainly buy them again and recommend them to others.
My son once got detention in middle school for having a rubber band around his wrist. No lie! It was lunch and he was eating lunch and he had a rubber band around his wrist. He would have probably got 380 days of detention for this pack. Luckily he is an adult now. People around him understand that rubber bands are useful implements of everyday office-ing. Also useful in tie-dying keeping rolled parchment rolled holding the paper down on my clipboard... all those things. Still give them to my son from time to time though. The rebel.