The Apprentice drafting chair from Safco features an ergonomically sculptured and supportive seat and backrest cushion overstuffed with high density foam. Other features include commercial grade stain resistant upholstery, height adjustable backrest, built-in lumbar support, pneumatic seat-height adjustment, 360-degree swivel, waterfall seat edge for improved circulation and a durable nylon five-star base with dual-wheel carpet casters. Additional caster options available. Adjustable T-shape arms also available for this model. Meets or exceeds ANSI/BIFMA standards. Limited lifetime warranty from SAFCO. Dimensions: Seat Size: 20.5"W x 19"D. Back Size: 18.5"W x 19"H. Seat Height Adjustment: 22" - 32"H. Weight: 28 lbs. This chair normally ships within 2-3 business days.