Vess Silicone roller helps improve blood circulation and skin metabolism.Itremoves all types of pains from your body. Just run over the pain area of your body and get the best result.It is made of plastic androller material of silicone rubber.Recommendedusage is for approximately 5 minutes daily-At the beginning you might feel a strong stimulation, in this case should use it for a shorter period of time and control the strength until skin gets used to this type of massage stimulation.