<b>Product Description:</b><br></p> Product Size: 20.8×46.5 inch<br> Heating Power: 30 Watts<br> Belt Material: Soft PU leather (both sides), 21 Individual Jade Stones<br> </p> <b>HEAT SUGGESTIONS: </b><br></p> Warm–temperature range (103°F~109°F)<br> Low–temperature range (110°F~119°F)<br> Medium–temperature range (120°F ~129°F)<br> Medium High–temperature range (130°F ~139°F)<br> High–temperature range (140°F~149°F)<br> Very High-temperature range ( 150°F ~159°F )