It refers to a seat lumbar support having adjustable. To ease the fatigue of long driving, seat lumbar can change the “convex” degree, to give the body some support, not the waist due to “empty” the produce fatigue.
It refers to a seat lumbar support having adjustable. To ease the fatigue of long driving, seat lumbar can change the “convex” degree, to give the body some support, not the waist due to “empty” the produce fatigue.