I have been using these rubberbands now for about 5 or 6 years and they have never let me down.I had no idea that they were as strong as they are.I use them every day and probably use at least 30-35 of them.I also have a cheaper brand but they are no match for staples brand.The cheaper ones break on me at least half of the time.I did get a lot more of the cheaper brand for the money I paid but what I thought was a savings turned out to be a waiste of money.When they are used up I will only use the Staples brand from then on