ABS material: The flood embankment is made of ABS material, which is thick, wear-resistant and durable, and professional for flood control Stackable Storage: 90 degree L-shaped stackable storage design, so it won't take up too much space when storing or transporting. Working Principle: Automatically ballasts according to the weight of the flood. The higher the water level, the tighter the guardrail presses on the ground. Combined waterproof board: 90-degree L-shaped design, good load-bearing effect, easy to store, save space, free assembly, any length Wide range of applications: suitable for garage waterproofing, flood control, uneven roads in low-lying areas, etc.