Where is the thickest skin on your body How thick?

The thickest skin is on the soles of your feet (particularly at the heel)

On average, the skin on your feet is 1.4 mm thick, which is more than twice as thick as the skin on your face, which is only 0.6 mm thick. The thick, rubbery texture is designed to protect the feet from wear and tear as they bear the body’s weight.