zebra strings stink--they definetly stretch---and when they do you fight your peep alignment.you would think mathews would offer a better string on there bows---but i guess since they manufacture them in bulk they got to much money tied up.you would think they would produce a much higher quality string.mine stretches about 1/2in every year.but they wont next year because i am definetly not going to waste my money on them any more