Ergonomic leather office chair supports your neck, lumbar area, arms, hips and legs with a widened, thickened seat cushion and high backrest to maintain comfort through long work sessions. The 25.5 x 24.5 x 42.5 in frame combines adjustable seat height, rocking function and a swivel seat so you can shift posture as you work. Rocking tension control lets you set a tighter or looser feel, while a lifting lever adjusts the chair up or down to match your desk. 90° flip-up armrests move out of the way to save space and ease side access to the seat. A heavy-duty 5-claw metal base with smooth rolling casters supports up to 300 lbs so you can move between tasks easily.