Ergonomic contouring in the backrest and seat supports your neck, shoulders, lumbar area, hips, and legs during long hours at a desk. The PU and PVC leather upholstery covers a high-density sponge cushion that is widened and thickened to help distribute pressure. The 27 x 26 x 37-in overall size pairs a rocking function with an adjustable-height, swivel seat so you can find a comfortable working position. Flip-up armrests and a stable 5-claw metal base with casters support up to 350 lbs and allow smooth movement.