Never stick the warmer directly to the skin. Careful and supervised use for children, the elderly or disabled. Consult a physician before use in case of diabetes, fragile or sensitive skin, circulatory problems, paralysis or damaged nerves, arthritis, rheumatoid, in the pregnant women or in case of doubts. External use only. Do not use on a frostbitten or desensitized skin. Do not use while sleeping.

The heating process activates upon contact with the air: 1. Remove the heater from the package and shake it 5-6 times to activate the heating process. 2. To ensure an optimal heating temperature, leave the process to activate in the open air for 10 mins before beginning outdoor activities, ideally for an ambient environment of approximately 20°C. 3. Once you feel the warmth, place bodywarmer on your feet

Never glue the warmer directly to the skin. Ideally, inside socks. Dependent on the type and size of boot, under feet or under toes.