Brand Zollyss Age range (description) Adult Number of Items 1 Special features Reusable Use for Back About this item 100 % Brand new and high quality Product Heating can be in microwave oven or boiling water. It is microwave safe Keep in Hot and Cool Pack normal fridge (Not in freezer) always for instant use Temporary relief of muscle aches and pains back pain,sinusitis, menstrual cramps, workout soreness comfort Use it with the cover provided or any towel, Microwave to Heat or Soak Pack in Boiling Water for 5 Minutes.