Synthetic Urine Warmer Heat Pads is an accessory designed to help you achieve and maintain the proper temperature for Synthetic Urine. Each heat pads provide up to 8 hours of consistent heat once activated. Measuring just 4 x 5 x 0.01 inches and weighing only 0.05 lbs, the Heating Pad is lightweight, compact, and easy to carry in a pocket or bag. To activate it, simply open the package and shake the pad.The Heat Pads is designed to work with your body heat to help maintain a temperature of approximately 98°F. When using it with the Whizzinator Touch or Whizz Kit, place the heating pad between the cotton belt and the pouch, on the side opposite the temperature strip. Its ultra-thin design adds virtually no bulk, making it comfortable and discreet to wear. Affordable and easy to use, the Heating Pad is the perfect companion for all ALS products.