These professional flood control sandbags use 7S*3 high-density reinforced canvas material with a 99% leak-proof rate and can bear up to 30kg per bag. The eye-catching yellow-green with reflective markings facilitates night operation identification. Four sizes 25×50cm to 40×60cm meet various flood prevention needs, suitable for river breach blocking, urban low-lying area protection, and underground passage waterproofing, providing efficient protection for emergency flood control.
