USB Knee Heating Pads: --High-quality material made, small voltage control design, safety to use with overheated protection gear. --Fast-heating in 1 minutes, 3 Different temp mode available. --Easy to operate LED power button, Fits either left and right knee/Leg/Arm for men and women. --Provide ultra comfy hot therapy for knee arthritis pain relief and injury recovery, keeps knee warm. --Heat therapy pad wraps your knee and promotes blood circulation stimulation. --Constant heat therapy to meet the various need: Stiff joints, Knee injury recovery, Knee arthritis pain relief, Muscle soreness and cramps, Knee injury or surgery recovery, Keep knee warm in cold weather. --USB power cord for multiple occasions available. Coming with USB cable,you can connect to a power bank,so Portable for use when you're watching TV or reading a book on the sofa at home. 3 Adjustable Temperature Parameters for Reference: - Highest (red): the temp is 131-134.6?, hot - Medium (blue): the temp is 113-118.4?, warm, recommend for long time use - Lowest (green): the temp is 96.3-104? Warm Tips: *It is recommended to start from the lowest temperature when using it for the first time. *3 adjustable temperature, please adjust according to your needs when using, to avoid causing discomfort. *If the heating temperature is too high, please lower the heating temperature to avoid burns. *Skin redness is normal for heat therapy. *This heated knee brace will not affect your move, you can do anything else (except strenuous exercise) with it.Portable Heated Knee Brace: The knee brace come with a usb power cord, it can be plugged in any power supplies with USB port, such as power bank, PC, laptop, desktop computer and car charger, you can enjoy the knee warm and blood circulation in multiple occasions, whether you are walking, driving or working in the office. 1 Button Control with 3 Temperature Control: Very easy to operate, you have full control over the heating temperature; Power button with LED indicators to operate to Red Max, Blue Mid, Green Min temperature settings. Effective Pain Relief: Built-in mesh bag, you can insert an ice pack or a herbal bag for relief; This knee wrap is effective for pain relief and recovery from meniscus tear, tendonitis, tennis elbow, arthritis, runner's knee, swelling, surgery, muscle strain, ACL, tendonitis, tennis elbow, arthritis, runner's knee, swelling, surgery, muscle strain, and more. Heating Knee Pain Relief Pad: Providing ultra-comfortable heat therapy for knee arthritis pain relief and injury recovery; it also stimulates blood flow and improves circulation, Keeps knees warm and can also be used on calves, thighs, arms to relieve sore muscles. Light and Safe: Made of lightweight, breathable neoprene; fully adjustable to fit most body types; leg heating pads can provide you with the necessary heat and pain relief; suitable for both men and women left and right knees.