Far-infrared literature published by HowNet, a cooperative organization of Chinese Academy of Sciences.
Dr. David's underwear has never been on 3 15, 20181,and has been promoted by CCTV.
Dr. David is on CCTV video.
Dr. David's underwear is not only implanted with far infrared rays, but also added with copper fibers in the crotch, which has antibacterial and bacteriostatic effects.
What is copper ion fiber?
Can far infrared rays get through microcirculation?
Far infrared can improve human microcirculation.
What will happen if microcirculation is not smooth?
The Importance of Microcirculation to Human Body
About Dr. David, every answer I give has an official reference. If you have other opinions, you can provide official reference. Moreover, since the establishment of Dr. David's 20 14, he has always promised that clothes will be returned one year and one day if they are not satisfied.