Adiustable seatcushion width, Buckle design , you can adjust the width of the seat cushion according to your hip shape. U shaped hollow and breathable design, Avoid sitting for a long time and cause poor blood in the buttocks insidious diseases such as hemorrhoids. Based on real customer feedback, Upgraded vent hole design on both sidesrelieve the sultry heat of the buttocks for prolonged periods of time making sedentary more comfortable. Slow rebound memory foam, Shock absorption and pressurerelief, full support, not easy to deform after sitting for a long time. Surface pressure relief Butt shaping, when sitting , the back is straight, naturally tall and straight and the temperament is outstanding. Wrap the buttocks for sedentary ease, Both sides sunken to wrap the buttocks, Such as the care of the hands version release the pressure of the tail vertebra. Specification: Material: Memory cotton Color: Black or Grey or Navy blue Size: About 48x39x14cm Package include: Memory cotton cushion x 1