When buying jewelry online, most people don't know the size of their bracelets, but they don't want to go out to the gold shop to measure their rings. What should I do at this time? Teacher J uses a picture to teach you to measure your hand circumference at home and choose the right bracelet. Fully lubricate with detergent or hand sanitizer, then let the assistant hold the widest joint of the palm with his left hand, and then slowly slide down with the bracelet in his right hand. When he reached the bottom joint of his thumb, he slid in hard!