Double-sleeved ↓ Cardboard to prevent bending ↓ OPP bag to prevent water damage The item will be packaged this way and shipped via Mini Letter. Anonymous shipping is available for an additional ¥150. A rigid case is available for an additional ¥100. Basically, after opening, I immediately double-sleeve and file the cards, storing them at home. Some cards are stored in rigid cases. If you would like to know more about the condition, I can add photos, so please feel free to ask.