Using these upgrade parts is easy. Just attach the hair pieces and facial expressions to your SH Figuarts Son Goku GT figure. The golden tail can also be easily added. When handling the parts, be gentle to avoid any damage. To keep them in good condition, store them in a cool, dry place away from direct sunlight. If they get dirty, you can use a soft cloth to gently clean them. And remember, the Son Goku GT figure is sold separately, so you'll need to get that first to use these awesome upgrade parts.