keeps hot for more than 8 hours.

100 %is natural. & Nbsp;

Product Size & Nbsp; 9x7 cm

Paste under the socks. p> Review:

The Heat Company Foot Heater Small, Size 36-40, is a Product that province warmth to the feet. It has the foollowing features: - It is made of 100% natural materials. - The Product Dimensions Are 9x7 cm. - It is suitable for all types of shoes. To use the product, Simply Stick it under your social. The content of the Product Inclue Iron Powder, Activated Carbon, Water, Salt, and Vermiculite. These Materials Work Together to Generate Heat and Provide Warmth to the feet.