chili-feet® combi-pack (3mm + 5mm)

chili-feet® warm soles convert walking pressure into heat. Suitable for shoes of men and women over 48kg, offering comfort. Available in 3mm and 5mm thicknesses for different seasons.

• The description claims that the soles produce heat through periodic compression and relaxation of the material while walking.
• The description claims that the soles require continuous walking to function and do not produce heat when standing still.