The First Choice in Winter
The warmers is very useful to keep feet warm in cold temperature. However, if used in shoes with bad breath-ability, the temperature of heating piece will be low. Then just take off shoes for a while to make heating piece meets air, the warmer will heat again.
Simply open the package, peel away the paper backing; stick the warmers on the bottom of your socks. No need to do external heat. If it does not work, please shake or knead several times to make them react with air adequately. Besides, these warmers can not be stone cold, but stay warm literally and really toasty. The maximum temperature is 63 degrees Celsius. The average temperature is around 53 degrees.
Suitable for cold-proof in chill temperature, keeping warm in outdoors.
Prevent frostbite, control beriberi.
Encourage blood circulation in case of cold feet.
Release and comfort minor arthritis.