Aesthetics and ergonomics to the extreme.In order to reduce the damage of the button to the chair, each gear is hidden in the inside, each pull is an adjustment, no button, adjust gear up to eight. More beautiful and practical. Three years of ingenuity, the chair function to achieve incisively and vividly. In order to achieve the user's good sitting feeling. Express the purpose of Sihoo furniture, let everyone has a good chair.