adhesive body warmer,heat pack pain relief,warm your body size: 13x9.8cm(+/-3mm) heat: 12hours packing: 1pcs/plolybag ,400pcs/carton Contents: Iron powder, water, salt, activated charcoal, cellulose. Instructions 1. Open the outer package when use. 2. Remove the inner pouch from the protective pack. 3. Shake lightly two or three times to generate heat. Caution 1. Do not apply directly against skin as burns may occur. 2. Do not swallow the contents 3. Supervision is needed when using the warmers on infants, children, elderly and people with physical disability or handicap 4. Do not use while sleeping 5. Remove warmers immediately if they become uncomfortable or too hot. hot pack is environmental,non-toxic and safe adhesive heat patch(hand warmer, hot pad,pain reflief).