Each clip is designed to hold a thin ponytail holder (or rubber band). Once you secure a ponytail holder (or rubber band) to each clip, put your hair into 2 thin ponytails and then snap the two pieces together for a look that keeps your hair off your face. PLEASE PROVIDE FEEDBACK AS TO WHETHER THE CLIP HOLDS! I have not printed this design and I am uncertain if latching mechanism needs adjusted or re-positioned.I used inkscape to design the two parts of the yin yang symbol, imported it into openscad and tweaked the design from there.