This square flood prevention sandbag is made of high-quality silicone fabric, measuring 40×25×10cm with excellent waterproof performance and weight capacity of 17-20kg per bag. The military green color with yellow edges makes it highly visible for quick identification. Special handle and zipper design makes filling and carrying more convenient, with stacking stability up to 98%. Suitable for flood disaster prevention, riverbank reinforcement, emergency leakage blocking and other scenarios, providing efficient protection for flood control operations, proven reliable in over 200 frontline flood prevention sites.