The Thera-Med Hot Cold Clay Compression Back Wrap can be microwaved for heat therapy or placed in the freezer to be used as a cooling compress. The compression back wrap uses a natural clay-based compound that delivers radiant energy evenly throughout a targeted area without creating hot or cold spots. The moldable clay and neoprene wrap with Velcro make it easy to apply compression to a specific area by conforming to the body. An additional Velcro extension strap allows the wrap to be used comfortably on larger areas. Wrap remains flexible even when frozen because of unique clay technology.