Does the pressure relief seat work? Is it exaggerated or is it really effective?

As people living pressure surge, three point one line of life every day, sometimes sit even reached more than 8 hours of time to work, sit all day, sedentary not the blood circulation, oppressive nerve, causing diseases, which greatly increased the pressure on the body, people now the disease is more and more younger, this cushion can not only ease discomfort associated with a sedentary, but also for our protection of sciatic nerve。