The Energy Cinch is a simple, low-cost, highly effective window treatment that controls thermal heat. Controlling and utilizing thermal heat will significantly lower energy consumption, resulting in immediate and dramatic savings on your energy bill. With an R-value of 7.6 (used over a single pane glazed window) the Energy Cinch is the most effective product available to stop thermal transfer. The Energy Cinch installs quickly and easily without the use of nails, screws, tape, velcro, or brackets, and can be used to add insulation to existing window treatments or by itself. It works in all weather by sealing heat in or out, and easily adjusts to allow light or air in when desired. The window solution can be removed in a matter of seconds, and stored compactly when not in use.