A Warmie is typically warmed in a microwave.
Based on the provided information, here's how to warm a Warmie:
- Microwave: Warmies are designed to be heated in a microwave. The flax seed inside retains heat for hours, providing warmth and comfort. The specific heating time depends on the microwave's wattage and the size/type of Warmie, but it is likely a short duration.
The YouTube video excerpt suggests that the flax seed filling will retain heat for hours.