Abstract: [Object]A hollow structure member having an air layer of a substantially uniform thickness to improve heat insulating performance and shock absorbing performance and cable of being folded into a smaller bulk in an exhausted state of gas. [Means for Solving the Problem] Two sheet members (11, 12) constitute at least a part of a hermetically sealed structure and disposed face to face with each other, and a gas-permeable sheet member (13) has gas permeability and joined alternately to opposed surfaces of the two sheet members (11,12), and the two sheet members may be joined together at end edges thereof to form a hollow body.