As you probably know, slingshot rubber bands are consumables. Over time, the rubber bands wear out and can tear, this is a completely normal process for any rubber band. We guarantee that you will fire at least 100 shots with our rubber bands before the rubber band gives up the ghost. However, if the rubber band breaks before the 100 shots, we will immediately send you two new tied rubber bands. Guaranteed! Simply contact us for this. You can find the guarantee conditions here .