There is a concave-convex bone in the seal of the bag with a width of 6 and a length, which can be automatically sealed. It will be sealed tightly after pressing it easily. It is very convenient to open and close at any time and use it repeatedly, the material is 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.