VIVA OFFICE Hottest High Back Ergonomic Multi-function Luxury Leather Office Chair with Top Leather Seat and Back, Adjustable Italy DONATI Armrests and Italy Synchronous Mechanism, and Aluminum Base Ergonomic Full function leather high-back executive chair with pneumatic seat height adjustment and side waist support Top leather seat and backrest, head and waist cushions made with premium fabric upholstery, and waterfall edge design to eliminates leg fatigue Adjustable Italy DONATI armrests provide optional support for your elbows and forearms, helping relieve shoulder strain Italy Synchronous Mechanism,Aluminum base, and excellent lumbar support Adjustable headrest, tilt tension control.Resistant polyurethane caster - No more scratches on Hardwood floor, or any type of floor