Filled with selected cereal grains and dried mint. They smell wonderful and therefore give peace of mind. This hot pack has a removable filling. Put the heat product or filling in the microwave for 1.5 minutes (based on 800 Watt) and it will stay nice and warm. Have you sprained your foot or have a fever? Put the cuddly toy / heat product in the freezer (in a plastic bag) for 3 hours and it will cool you down nicely. They are ideal for children from 3 years old Make sure that the heat products are placed on a clean plate or plate.