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Pregnant women due to fatigue like sitting, but this easily affect the heathy develoment of the fetus. Pregnant women cushion design can sence the pressure, and change into different colors over time. When transforming into red, it will emit a warning tone. Only when the pregnant leave it, the press will disappear. The warning tone will stop and the cushion change back to green. This design will play a good role to reduce maternal distress alert.