KnitWarm sponsors KnitWarm warmerchief for WWF Hong Kong Run For Wild 2018 “Race Against Extinction”. Congratulations to all the winners. KnitWarm® is patented self-heating textile that uses the integration of our exclusive 3D knitting technology. KnitWarm Warmerchief plugs into a portable 5V/2A power bank and heats up within 30 seconds for instant warmth, which could relieve muscle soreness and help blood circulation after exercise. It is your warm towel on the go.