Size: 40x150cm Material: Natural cobblestone Density of cobblestones: Middle density Distance between cobblestones: about 20mm Size of cobblestones: about 20mm Color of cobblestones: mixed Weight of the mat: 6300 grams Function: 1. Good for middle age, senior age and old people. Long term walking on massage mat can improve the micro-circulation of the second heart of human body (foot) so that to get better irritative effect to the end of nerves and enhance to get better propitiatory affect to the spirit. This has enhanced assistant treatment effect and health care effect to the popular diseases. 2. Good to people sitting to work and study for a long time. By using healthy foot-massage mat, the above diseases can be removed or eased greatly. 3. The Cobblestone Mat helps users improve circulation while reducing blood-pressure. The positive effects of foot reflexology paths have become more widely recognized. Notice: * This is not medical instrument. Please ask for doctor's advice for serious illness. * Not fit for those people has the symptom of haemorrhage to use during the period of haemorrhage. Such as hemoptysis , have blood in their stool , hemorrhuage stomach and intestine from womb , viscera etc. * Not fit for women at the period of menstruate and pregnancy. * Not fit for patients at the moving period of phthisis , at the unsteady state of acute myocardial infarction, with serious kidney failure or serious heart failure. * Please do not expect any immediate effect. * Foot will feel pain at the beginning. Please wear socks or put a towel on the stones. * We use natural cobblestones to produce the massage mat. Each piece of cobblestone is exclusively unique in the world. The massage mat you get may have small differences with the image.