This product is a heating/cooling bag made with snuggle flannel and field corn!  You can use the microwave to warm it up or place it in the freezer to make it into an ice pack.   It's great to use to heat up your hands and feet in the winter, or to place in your bed to warm it up on those cold winter nights.  The heat can also help with body cramps and aches.  You can also use it in the summer to cool you down or if you need to ice sore muscles. I've been making these for ten years and absolutel Field Corn, Moist Heat, Ice Pack, Winter Nights, Winter Night, Sore Muscles, In The Winter, Heating And Cooling, Cold Winter