Proper storage is the foundation of card collecting.
Penny Sleeves: The First Line of Defense
Every card should be in a penny sleeve — even commons. Use acid-free, archival-quality sleeves.
Toploaders and Magnetic Cases
Cards worth $5+ should be in toploaders. For cards worth $50+, consider One-Touch magnetic cases.
Climate Control
Store cards at 65-75F with 40-50% relative humidity. Avoid attics, basements, and garages. Use airtight storage bins with silica gel packets.