The lightweight Millennium Marine Shade Tree Umbrella keeps you cooler than conventional umbrellas and provides a double layer of UV protection. It has an aluminum and composite construction with a special coating to reflect heat. It features an easily moveable top that tilts to help you achieve the ideal angle of coverage, whether you’re enjoying the day on land or out on the water. The heavy duty stow and carry bag keeps the umbrella protected and easy to move. The convenient vent can be opened on top to let hot air out and can be closed to keep out the rain.