The back is paper. Please attach it using your own adhesive. It will be shipped in an OPP bag to prevent it from getting wet, and then in an envelope. 《Notes》 * The color of the stones may change slightly depending on the angle, so please refrain from purchasing if you are looking for perfection. * We do not accept returns or exchanges or low ratings due to color differences from the photos or parts falling off during shipping, so please check the photos carefully before purchasing. * Stones may come off during shipping, so please reattach them with adhesive, etc.