The outer layer of card storage case is made of PU leather with non-slip texture, waterproof, scratch-resistant and wear-resistant, which provide better protection for your precious cards, keeping your cards safe from water, scratches, oil, and more.The soft interior can protect your trading cards from scratches.This large trading card box includes multiple magnets for a secure closure, strong magnetic closure design ensures that keep your collection safe even when the trading card box is shaken upside down.