Office chair lumbar cushion use time

Office chair lumbar cushion length of use is 8 hours. According to the query related information shows support for the lumbar lumbar cushion, even if you sit on the 8 hours, will not feel too tired, the use of double back cushion lumbar cushion, lumbar back pressure distribution, lumbar spine pressure can be reduced from the general chair 140 percent of the pressure to 75 percent or so.