ERGONOMIC DESIGN: It has a high back and features premium mesh backrest to provide a timeless style that fits in nearly any room. The pneumatic seat height adjustment will meet your different needs. The backrest can tilt up to 135 and locke at 3 angles you want between 90 -135 . 360 rotation. The armrest can be adjusted up and down, backward and forward so that you can set it as per your preference. MULTI-FUNCTION: Whether you're responding to emails, evaluating reports, or brainstorming with colleagues, these ergonomic office executive swivel chairs provide not only sleek, professional style, but also sophisticated support for all-day comfort. BEST IN CLASS COMFORT - High-Density molded foam cushion & breathable mesh material allows air to circulate to keep you cool while sitting and gives you the comfort you deserve TECH SPECIFICATIONS: F Frame Material: Glass Filled Nylon Structure with Breathable Mesh | Size: High Back | Swivel: 360 swivel | Mechanism: Synchro Multi-Tilt Lock Mechanism| Gas-lift : Class 4 | Base: Heavy Duty Metal Base | Castors:50mm Dual Caster Wheels | 2D Adjustable Armrest | 2D Adjustable Lumbar Support | 2D Adjustable Headrest | Maximum Weight Capacity: Upto 125Kgs | Height Suitability: 5ft to 5ft.10" |3 Years Warranty by Green Soul | Color: Black