... 100% eco-friendly TPE mat, The flower nail is made of 100% ABS plastic spike. b. It is updated from original acupressure mat ... long-term, close together, good business relation.What is the effect?Use 10-15 minutes, the hormone will start to coming out and go ... painful will reduce apparently.Use 30-40 minutes, the painful treatmant is completed, you can feel the body more lightly, relax and powerful.