Maximize your lighting setup without adding more lamps or additional heat sources. Hydrofarm's reflective metalized film makes the most efficient use of your lighting by reflecting light onto your plants. This makes your light effectively work twice for you. The light film unspools easily from a sturdy roll with no sticking or waste. The roll also makes it easy to store. Simply cut what you need to cover windows, walls, and more. You can even place film on tables or floors, then put plants on it and reflect heat up through their pots and other containers. This reflective metalized film is the best reflective material made.