Advantages:

1)    Fast Construction: No complex structure is required, just fill the stones on site and stack them, which can be operated by manpower or machinery.

2)    Flexible Adaptation: The bag can be bent to fit irregular terrain, suitable for emergency projects or narrow spaces.

3)    Strong Water Permeability: The gaps between the filled stones allow water to flow through, reducing hydrostatic pressure and the risk of structural collapse.

4)    Controllable Costs: The single bag is small in size, easy to transport and store, and is suitable for small-scale or temporary projects.