Heat storage material using heat energy which is the functional thread of Teijin Frontier, using warp thread, the original weak slab No. 9.
As a special function of weft yarn, it is a stretch material that can store heat energy of the sun and the human body.
In the test data of Bokken, it is a material that has resulted that the difference of up to 4 degrees appears as compared with ordinary materials of the same standard.