... Description Home textile quilt Materials: Far-infrared anion fiber cotton and tourmaline NM far-infrared magnetic crystallite self-heating mineral coating ... volcanic rocks to refine,uninterrupted heat in 24hours,far infrared going irradiating, quickly kill and remove the wind ... close-fitting,each cloth include more than 1400pcs far infrared,negative ions,self-heating,tourmaline crystallization points, ...