.Acupuncture based、 self-warming pad design with 6 embedded magnets. The knee pads warm up after they are worn for 20 minutes.<br />.Safe、 comfortable and easy to wear. Adjustable velcro straps to fit men and women.<br />.Helps improve blood circulation、 promote metabolism、 clear the meridians and enhance immunity.<br />.For pain relief、 osteoarthritis in the knee、 sports injuries、 bruises、 edema and rheumatic diseases.