Premium Quality]- 3mm closed cell polyethylene foam covered on pure aluminum foil. Easy to install, easy to cut, sturdy yet lightweight ??Safe??Non-toxic, non-carcinogenic, fiber-free, safe to handle and does not require protective clothing or respirators to install. Easy to install and maintenance free, cuts easily with utility knife or scissors and installs easier than fiberglass. Easy to install, easy to cut, sturdy yet lightweight. Aluminum Foil Heat Shield Radiant Barrier Foa Insulation Panels Radiant Barrier Foil Bubble Vapour Barrier Saves energy by reducing the stress on heating and cooling systems, keeping your home or car warmer in the winter, and cooler in the summer ??No-self adhesive??Size: 40 x 80. 3mm 04 Foam Core Radiant Barrier Apragaz Bubble Foil Insulation, 48 in X 16.4 Ft Reflective Insulation ¡¾Application¡¿You can also use on car roof floors, hood , firewall, chassis, trunk room, trunk lid, garage and so on.