PURPOSE: To resolve uncomfortableness such as stuffiness by suspending a rigid thread between a surface layer and a back layer made of a woven stuff or a knitted stuff and arranged face to face at the desired interval, and forming an air layer between the surface layer and the back layer.

CONSTITUTION: A surface layer 12a and a back layer 12b made of a woven stuff or a knitted stuff with an planar expanse of a surface material 12 are arranged face to face at the fixed interval, and a thread 12c is suspended between constituting fibers of the surface layer 12a and the back layer 12b by double Russell knitting, for example. A thread with proper rigidity is used for the thread 12c. An air layer 13 with a proper width is formed between the surface layer 12a and the back layer 12b. When a person is seated on a seat, the back or hip of the person is not closely stuck to a pad 11, and the air-permeable air layer 13 is provided between the person and the pad 11. The stuffy feeling of the person can be resolved.