Product Details A soft, gel-filled package that can be used to apply hot or cold therapy. This can be placed in the microwave for hot use or in the freezer for cold use. 2 Per Box Activation Method Microwave\/ Freezer Application Hot\/ Cold Pack Measures 4 x 10 inches Fabric Plastic\/ Gel Fuse Method Without Method of Securing Size One Size Fits Most Target Area General Purpose UNSPSC Code 42142108 Use Reusable Latex Free Indicator Not Made of Natural Rubber Latex