ERGONOMIC DESIGN: It 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 lock at 3 angles you want between 90 -135 . 360 rotation, cushion and rolling swivel caster make this desk chair more flexible and convenient. 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: Frame Material: Glass Filled Nylon Structure with Breathable Mesh | Size: Mid 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 | Maximum Weight Capacity: Upto 125Kgs | Height Suitability: 5ft to 5ft.10" |5 Years Warranty by Green Soul | Color: Black