To obtain a cushion with excellent shape keeping performance and pressure resistance, by connecting facing two top and bottom braided fabrics at proper intervals by mutually crossing non-stretchable connecting strings to form a stereoscopic fabric and forming an air impermeable layer on the surface of the stereoscopic fabric.

A fabric is made double braided comprising a top braid (a) and a bottom braid (b) and both ends of the braids (a), (b) are integrally braided to make tab parts 1, 2. Both braids (a), (b) are connected by mutually crossing non-stretchable connecting strings 5..., 6... at proper intervals. When distances between the centers 3, 4 in the width direction on the braids (a), (b) and the tab parts 1, 2 are set to sides 13, 14; 23, 24, the side 13 and the side 24 are connected by a non-stretchable string 5 and the side 14 and the side 23 by a non-stretchable string 6. When centers 3, 4 are fully extended, the cross section is made a square. Both top and bottom ends of the stereoscopic fabric formed like this are tightly closed and an air impermeable layer 7 is formed by rubber, etc., on the whole to constituted the cushion.