These reusable heating soles are activated by pressing the metal plate. After approx. 1 minute the liquid contained in the sole hardens and gives off heat to the feet at approx. 30° C for up to 2 hours. After use, place the heating soles in boiling water for about 5 minutes and the heating soles can be used again. Size M (C3-6), size L(6.5-9.5).
for Reusable Heating Insoles
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