Using sandbags to block floodwater is very much trendy and to eliminate the hassle associated with heavy and non-functional sandbags, water sandwich concept has been developed to make it easier for users to prepare and set up an efficient flood protection. The concept features two parts to fight floodwater – a supporting frame and an array of water filled bags. When flood occurs, the soft and flexible water filled bags are designed to press against one another, and against the doorframe and the ground, thus blocking all possible spaces where floodwater may enter. When preparing to face the flood, people should set up empty bags in the doorway side by side and pour with water up to the probable water level caused by the flood. If the water is going over the expected level, the water sandwich will warn the users through alarm sound and flashing lights. After the flood, the water should be drained out from the bags and the frame will be automatically turned into an easy to move handcraft.