What is the membrane on the outside of the laundry beads?

The film on the outside of the laundry beads does not need to be cut or torn. It is a water-soluble film. Generally, the laundry beads of good quality brands can already do it. After washing clothes, there is no residue at all. Laundry beads themselves are for quantitative use, throw one into the washing machine, put it in the clothes, and start the washing machine. The advantage of quantification is that there will be no residue after pouring too much.