We purchased these lanterns for our wedding last summer (21 fdpi lot 20). High quality product, identical to what we can find in stores and leisure party but at an unbeatable price. They contain no metallic element (the circle is bamboo, rice paper sheet and the remainder in paper and wax to burn the tablet). Flight perfect when we launched in the middle of the night, there should be no wind at ground level for takeoff after that does not matter.
