... .Made of nanometer materials that is soft, folding. Infrared ski vest,winter vest,warm clothing(HJ-625J,anpan) Product Features1. Applying FIR heating ... can be used for warm-keeping in winter but also be used as a vest in spring and autumn.3. High heating ... its rating capacity after charging for 500 times.10. The vest is washable after taking out the heating parts. . Health care ...