1/2Pcs Electric Heated Knee Pads Wrap Support Brace Winter Knee Warmer Arthritis Pain Relief Features * HEATING & VIBRATING MASSAGER: Helps Knee Pain and Discomfort. Knee brace wrap provide 3 Heating levels and 6 Vibrating levels right in your certain knee area, for knee arthritis pain relief and injury recovery. It will be a ideal Christmas gift for your family and friends * PHYSICAL HEATING & MASSAGE THERAPY: Heating & Massage are sweet relief for arthritis and swelling. Knee brace wrap provides powerful vibration massage and comfortable heating, helps reduce joint pain, muscle stiffness and joint swelling * ADJUSTABLE AND STAY IN PLACE: the heating pad can wrap around and be locked at any knee or extend to Thigh/Calf positions where you need heat compress, you needn't hold it by hand any more Specification Material fabric: carbon fiber Voltage: 5v Power: 5.5W Gear adjustment: 3rd gear temperature / 6th gear massage vibration intensity Package Include1Pc/2Pcs*Heated Knee Pad (as your choice) Note: Due to different personal measurement methods, there will be an error of 2-4 cm, please understand! Thanks for your Support!