Small size: Can hold 6-12 small certificates, marriage certificate, household registration book. Multifunctional storage box, dustproof and moisture-proof. Transparent and visible, easy to find, refuse to search, see what you need at a glance. 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.