Darnus Swivel Office ChairBACKREST This office chair is characterized by an extended backrest design, which can better relieve the pressure on the user's neck, shoulders and lumbar region, thus reducing the feeling of fatigue. PADDED CUSHION The cushion is slightly curved, which can better wrap around the buttocks. Made of waterproof and anti scratch PU leather, the interior is filled with easy to rebound sponge, so you won't get tired after sitting for a long time. ERGONOMIC