The Eco Cooler is an eco-friendly air cooler that works without any electricity. It is made from recycled plastic bottles and uses a simple fan-system to draw cool air into a room. It works by filling the bottles with cold water and then attaching them to a frame. The fan creates an airflow that pulls the cold air from the bottles and circulates it through the room. This creates a cooling effect without the use of electricity. The Eco Cooler is an affordable and effective way to cool a room without using any energy.