In order to bypass the security scanners at the door, this man would carry a booster bag, which is a regular shopping bag typically lined with layers of aluminium foil.
The flexible cladding, which can withstand temperatures of at least 1200 °C, is a sandwich of three layersof ceramic fibre, each around 0.25 centimetres thick, interspersed with layersof silicon - coated glass fibre and thin aluminiumfoil.