Abstract: The one-piece sunvisor extender improves on existing devices by providing a product that allows for more coverage, is of unique but simple design, uses a material that has low mass and is flexible to allow for a safer product. Its unique design provides for a self clamping action and by using cellular material to form the device allows it to be released by simple hand motion. In addition the device provides for an additional range of movement (right or left) not found on other models, can be trimmed to match the angle of the windshield post, can conform to other interior components it comes in contact with, and will reduce damage to other interior components. The one piece design requires no assembly, thus reducing its cost.