The shape of this cushion perfectly fits the curves of the thoracic, lumbar and coccyx, allowing you to maintain a healthy posture when sitting for a long time. Compared to previous products, this cushion has been increased in width and height, so it can better cover the whole back. The outer cover is made of 80% velvet which is breathable and soft. The inner core is high density bamboo charcoal memory foam which will not be deformed even if used for a long time. The packing is OPP bag, PE bag, Canvas bag, Cardboard box, Carton or Custom.