If leather has loose edges, it is usually sealed with edge sealing oil. There are many kinds of edge oils in the market, so you should know them clearly before buying. There are transparent ones and colored ones. When you encounter some colors, you may need to paint them yourself. After applying edge oil, it is generally polished and smooth.

In addition, the edge can be sealed with flanging, but the seam needs to be shoveled off, otherwise it will be too thick.