Clear-SW / fatigue driving

"The CLear - SW" based on the characteristics that hand cannot leave the steering wheel;The hand of the heat accumulated by the "Clear - SW";When the time is long;Enough heat can make the product change from white to yellow;At the same time holding area will gradually expand the knot vesicles;Thus through visual and tactile remind drivers;"driving is long time enough,please stop and take a rest!";To prevent accidents due to fatigue driving ;