Function: Promote circulation of blood, remove dampness and dispel coldness, eliminate blood stasis, ease pain, enhance the bearing capacity of body, alleviate excessive strain of joint and prevent the aging of articular bone. Appropriate: All kinds of pain in joints and feet coldness. Suggested Use: Use for as long as you wish to. Wear it in indoors shoes and/or outdoors footware. Extend the wearing time is allowed according to personal conditions. People who have sensitive skin will feel heat when wearing, some other will not. Can be worn pattern to the skin or pattern away from skin or with socks (if too hot).