Please follow detailed usage instructions on directions and warnings leaflet.

Heating:  Microwave (800W) - 1 minute, reheat at 30 seconds if necessary; Oven (Set at 100 degrees Celcius) - Heat for 20 minutes.

Test product to be desirable temperature before wearing on your feet.  Enjoy 20 Minutes of Warmth, Relaxation and Herbal Aroma.