How Does It Work?1: Hold the two ends of a button with both hands, and pull the small circle at the end of the button back with one hand, you will open the button, and you can get a part with pins and a part with hole.2: Select a suitable position on the pants, and pass the part with the pin through the selected position.3: Put the part with hole on the pin part of the button which through the pant .Notes:1. One end of the button is relatively sharp. Please use it patiently to avoid injury.2. Keep it out of the reach of children to avoid harming your baby.Thank you.