Shens Direct via Amazon has iTeknic Electric Heating Pad for Back Pain Relief on sale for $29.72
Shipping is free w/Prime
☀️Your Quick Muscle Relief Helper: Still suffering neck or back pain? Use iTeknic 33″x17″ XXX-Large heating pad can cover your back /shoulders/ neck/ legs/ knees, super sturdy long-lasting. You can also personalize your heat therapy by choosing to have a dry or a moist heating. You will find why you have not found it earlier!
☀️Fast Heat Up & 6 Different Heat Levels: with outstanding and more advanced heating wire density technique, the iTeknic PS001 heating pad heats up in seconds till reaches the temperature you want from a warm 105 degrees to a high of 140 degrees by 6 heating modes, relief all pains in seconds.
☀️Closed to Your Skin : Thanks to the enhanced 5 layers of double lined hemming process, the heating pad is made of premium super fine velvet fabrics( short plush + coral velvet), offers maximum comfort and warm for daily use. Also a best care for women’s special periods.
☀️Safe for Use: UL Certified, NTC thermistor for overheating protection,auto shut-off timer after 2hrs for safely using. For example, if you forget to turn off while sleeping, it will cut the electricity after 2 hours automatically, keep everything safe and sound.
☀️Do Not Have to Hand-Wash: The heating pad can be cleaned by machine or hands in the water below 40°C/104°F after the controller is detachable, but remember use it after completely dry. Now, let’s try it!