Chrysmela's double locking technology holds your earring securely at 2 points: First, wherever, however you are comfortable to gently “sandwich” your earlobe between your diamond and Chrysmela. While invisible, 3 micro ball bearings are working hard to hold tight onto the earring posts. So it may seem “normal” or “nothing special”, they are very secure. Secondly, if or when your earring gets caught with your hair or sweater and moves, Chrysmela firmly grips onto the little notch at the end of your earring post - this works like a safety net. Chrysmela stay locked until you unlock it.