To use the GradedGuard PSA Standard case, simply place your standard - sized holder from the grading company inside. It's easy! Just make sure to check the size of your holder first to avoid any fit issues. When it comes to maintenance, keep the case in a dry and clean place. Avoid exposing it to extreme temperatures or rough handling. If it gets dirty, you can gently wipe it with a soft cloth. Also, remember that holders with additional thickness or inserts might not fit well, so double - check your holder before using the case.