This lid is made from rotationally molded polyethylene. We treat the polyethylene with additives to protect from any ultraviolet distortion. This durable receptacle lid is designed with a unique locking feature that keeps it from blowing off of the can. The lid "snaps" over the edge of the receptacle and has an indented handle to make it easy to lift off and put back on. The swing door is attached with heavy-duty rivets to withstand years of daily use and to prevent separation.