14 width 20 there is a concave-convex bone at the Seal of the bag, which can be automatically sealed. It will be sealed tightly once pressed easily. It can be opened and closed at any time, and can be used repeatedly. It is very convenient and made of PE, tasteless, used for packaging, storing food ornament, cosmetics, frobnitz, instructions, clothes, etc. It is moisture-proof, waterproof, insect-proof, and prevents things from scattering.