A.Tension-based multi-segment adjustment device to support pelvis comfort by adjusting the“arc”of pad according to body contour . B.Tension band is used for displacement to be separate from general cushions with break-through in adjustment concept for convenient operation. C.Back pains due to “poor sitting posture” is eased with immediate adjustment for providing comfortable and healthy sitting. D.Comfortable cushion with ergonomic design to ease “back pains” due to long sitting. E.Portability, convenience and release of long sitting pressure to cor rectsitting posture naturally. ※.PATENT RESERVED
