We do use quite a heavy/strong chain on these, since we do sell these at over 100 stores we have through trial and error found what we see as the best chain for this product, however since Anklets are worn on the ankle they can be subject to extreme force and it is possible to break them, all chains have this in common. As we mention on our product page 'Our precious chains are crafted from fine sterling silver. Their delicate nature means they need to be cared for with loving kindness to avoid accidentally snagging or stretching. Please consider this before purchasing as this kind of damage is not covered under our returns policy.' We also recommend removing them (and other jewels) before sleeping.