For long-term figure storage, consider the room as carefully as the container. A closed box does not automatically protect a collectible from unsuitable dampness or temperature changes. Use the manufacturer's storage guidance and inspect the location before leaving a collection there.
Look for practical warning signs
Check for condensation, damp walls, leaks and musty packaging. Avoid placing boxes directly where water could reach them. A storage area that is dry on one afternoon may behave differently through seasonal changes.
A room monitor can help you understand patterns, but it does not create a universal safe humidity threshold for every material. Follow product-specific guidance, especially for mixed materials, cloth accessories and electronics.
Avoid sealing in a problem
Do not pack a damp item or wet packaging into a closed container. If a figure has been exposed to moisture, seek appropriate guidance before storing it. Adding a packet of desiccant is not a substitute for resolving a leak or unsuitable room conditions.
Use storage materials suitable for the product and follow any instructions for moisture-control products. Keep them from direct contact with painted surfaces and away from children or pets as directed by their labels.
Make inspection possible
Label boxes so you can find a figure without disturbing the entire stack. Schedule occasional condition checks and note any changes to packaging or surfaces. Do not leave heavy boxes pressing on fragile packaging just because the stack fits.
Keep the care details for your Super Saiyan Sphere figures with the storage record. If the proposed space has persistent dampness, choose a more suitable location before relying on extra wrapping to compensate.
Related guides
Where to Put Anime Figures Away from Sunlight and Heat · Should You Leave an Anime Figure Sealed in Its Box?