Mid-back design features 2-to-1 synchro tilt for maximum flexibility! Seat-slider capability provides enhanced seat comfort. One-touch adjustable seat height. Seat height adjusts from 19 1/4 to 22 3/4. Weight capacity tested to support up to 300 lb. Assembly required. GREENGUARD certified - certified for low chemical emissions: UL.COM/GG - UL 2818. Ranked in two tiers: Certified and Gold. Less harsh chemicals - made with fewer harsh chemicals, or safer chemicals than typical alternatives, helping reduce your use of and exposure to substances that may be more harmful to your health and the environment.