The insole foot warmers can keep your entire foot warm up to 48℃ in winter. They are perfect for skiing, hiking, fishing, camping, hunting, travel, riding, and other outdoor activities.

The ingredient is iron powder, vermiculite, activated carbon, water, inorganic salts, and water-absorbent resin.

Due to the differences in size between different countries, the sizes of S, M, L, and XL also vary. Please contact us and let us know the specific sizes.

We are a professional insole foot warmer manufacturer in China. We can custom insole foot warmers according to your requirements. The heating duration time, average temperature, highest temperature, size, and packaging bag can be customized.