This product is a heat insulation film, made of solid materials, safe and durable. It can serve you for a long time without being easily . The product is an excellent heat insulation film that can bring you more convenience, allowing you to have comfortable experience. Features -Color:Silver -Material:Aluminum foil - Size: 450.00X50.00X0.65cm/176.85X19.65X0.26in - Lightweight and reliable, using high grade insulating materials, not easy to tear. - The product adopts a large-size design with a large area, which can be cut according to actual needs. - The double-layer bubble reflective foil insulation is made of high-density EPE cotton, it adopts a three-layer design. - The surface is a reflective layer of aluminized film, which can reflect 97% of radiant heat and emit less than 3% of heat, the second layer The polyethylene air bubble layer is filled for vacuum, 3 layers of aluminized film can slow down the heat conduction and set the protection. - Reflective heat insulation membrane has good heat insulation performance and can efficiently reflect light, and heat energy. Package list: 1 x roll of heat insulation film