I purchased this but never used it, so I am selling it. It is new and unopened. This is a special item that allows you to easily change your look just by attaching it to a button. Please read the precautions for use carefully. ■ Size Decoration: 19mm wide x 45mm long Button cover fitting: 15mm wide x 15mm long * Compatible with buttons on general dress shirts (11.5mm in diameter) or smaller (variations exist) ■ How to Attach 1. Remove the fitting on the back of the button cover (there is a slightly raised part on the top of the fitting, which can be easily opened by placing your finger there) 2. Clamp the fitting onto the button 3. Close firmly until you hear a "snap" (be careful not to force it closed, as this may cause damage) ■ How to Detach 1. Hook your finger on the raised part of the fitting on the back of the button cover and remove the fitting 2. Remove the fitting from the button 3. Close the button cover fitting and store ・Be careful not to force the attachment or removal, as this may cause damage. ・The pearl parts are securely fixed, but may occasionally come off. Please be aware of this. ・Regarding the connection parts, the pearl connection fittings are thin, so please handle the product with care and gentleness when using it.