Mesh Chair with Bonded-Leather Seat, Pneumatic Seat-Height Adjustment, 360° Swivel, Adjustable Tilt and Tilt Tension. The black Lorell Mid Back Task Chair is a mesh office chair with a bonded-leather seat and a maximum load capacity of 250 lbs. The chair offers a pneumatically adjustable seat height from 18.1 to 20.9 along with 360-degree swivel and adjustable tilt and tilt tension. The 5-star base features hooded double-wheel casters for mobility.