Freedom HumanScale Leather Chair F213 with Headrest Saddle Vicenza Leather Titanium Frame Advanced Height Adjustable Duron Arms Standard Chair Seat Height HumanScale Freedom Vicenza Leather Chair with Self-Adjusting Recline and Advanced Adjustable Duron Arms - Intelligent counter-balance recline mechanism automatically provides the right amount of support through the full range of recline motion. Pivoting Backrest - Extra motion of the backrest during recline automatically adjusts to the changing needs of the spine; provides additional lumbar support Position-sensitive headrest moves into place when you recline and out of the way when you sit upright. Size adjustable to over 95% of the population Provides seat height range that accommodates 95% of the population Fast Free Standard Continental USA Ground Curbside Shipping is included. No PO Boxes, APO addresses or Air Express Shipping.