Abstract: An impact energy absorber. The impact energy absorber is a flexible pipe made from a metal foil. The flexible pipe is provided with a substantially sequential spiral shaped concavities and convexes about the periphery of the pipe along a length of the pipe. The pipe defines a cross section that includes a flat segment, first and second side segments that extend from the flat segment, and a segment that connects the first and second side segments. The first and second side segments act as first and second supports. The segment that connects the first and second side segments defines an additional support between the side segments.