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When the sealed package is opened, oxygen causes a reaction and heat circulates within a minute.
It is placed inside the shoe with an adhesive side for attachment to the socks (below or above).
Produces heat for approximately 6 hours (maximum temperature 45 °C, average temperature 37 °C).
Offers extra warmth to cold feet.
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.
