Unlike bulky seat cushions that are heavy or difficult to carry, this compact gel-filled cushion weighs only 2 1/2 lbs, folds in half, and is easily portable due to its integrated handle. The soft, pliant gel- and supportive foam-filled pads disperse weight across the width of the cushion, relieving point-of-contact pressure inherent in long periods of sitting (at a desk, behind the wheel of a car, in bleachers while viewing a sporting event, and more), helping to prevent or lessen back strain and blood vessel and capillary constriction. For additional comfort, the center groove eliminates contact pressure on the tailbone and soft tissue. The surface slopes forward a gentle 5° to encourage proper pelvic posture for correct lumbar curvature, while 16 small vented openings allow for adequate ventilation. 1 H x 16 W x 13 1/2 D. (2 1/2 lbs.).