Transparent and visible, easy to find, refuse to search, see what you need at a glance. Multifunctional storage box, dustproof and moisture-proof. Small size: Can hold 6-12 small certificates, marriage certificate, household registration book. Protect documents, avoid wet and worn out, store them reasonably, save space, and be easy to Multifunctional, can also store items, toys, medicines, and all other small items.