PURPOSE: To obtain a cloth capable of being applied for a backside of clothes, by using a material having far infrared light effect with a comparatively light weight and at a low cost.

CONSTITUTION: A bag body formed with a stuff having a air permeability is filled with a carbonized powder and formed into a sheet like shape. The carbonized powder absorbs heat of human body, generates an electromagnetic wave at a specific wave length (far infrared light) and keeps and enhances a temperature in the backside of the clothes. The carbonized powder has minute organizational voids which are originated from its raw material of woods and animals or plants, and is of light weight. Since it has a large volume of minute voids, it has functions as moisture absorptivity, deodorizing property and heat insulating ability which are not obtainable from metal, soil, stone or ceramics.