Nano FIR Thermal Healthy Knee Support has great ventilation property to keep your Knee dry and comfort all the time. It uses both the latest nanotechnology and the principle of FIR to achieve the aims of health care. The capability of FIR thermal energy can easily lead out by body temperature to maintain constant temperature to ameliorate knee’s cold condition, improve blood circulation, advance metabolism, dissipate sore and aching knee, prevent athletic injuries, disperse blood stasis, accelerate wound healing, activate knee’s ligaments to increase elasticity, strengthen knee’s support, and prevent rheumatoid arthritis. Especially suitable for infirm people, people who work under frigid environments, and people who want to block joints-related symptoms.