Joesco Lock sandbag, also known as military fortress, is a modern metal mesh used for flood control and military fortifications.It consists of a collapsible screen container and heavy geotextile, which is used as a temporary or semi-permanent barrier or fortress to block or small attacks.

  Advantages of lockable sandbags: blast walls are currently used in many military organizations,including the United States air force,NATO and the United Nations,and have been used to protect many countries around the world,including Afghanistan,bosnia,kosovo,Iraq,yemen,Sri Lanka,Jordan,the united Arab emirates,Turkey and so on.