Ankle sock - Black/Purple

SS21-050 Purple  against cold weather benefit from BLOODCIRC™ fiber ,  Far-infrared textiles are made with blends of polymer and nano- or micro-ceramic powders spun together with synthetic fibers and other fibers into yarns. absorb energy from sunlight (invisible light) or the human body, releasing far-infrared ray of 8~12μm wavelength back to the human body.supports cardiovascular health. Far infrared light has also been associated with an overall improvement in health.