... heat from around and heat from human body Far-infrared fiber Features: 1)based on materbatches spinning, good ... durability and washability, high sunlight resistance2)Far-infrared emissivity rate >0.863)Environmentally friendly, non-tox 4 ... and enhancing human immunization applications field: Suitable for making thermal insulation padding, hygienic articles, garments, decorative fabrics and ...