Back Type : Mid Back Back Material : Nylon (Grade B) Back Upholstery : Perforated Mesh Headrest : No Armrest : 2D Adjustable Armrest Functionality : Up/Down, Front/Back Seat Cushion : 55 Density Premium PU Molded Seat Fabric : Sponge Mesh Lumbar Support : Fixed Lumbar support Mechanism : Smart Synchro Mechanism Mechanism Tilt Type : Synchro 3:1(90 -135 ) Mechanism Lock Type : 90 Degree Gaslift : BIFMA Level 5 Base : Nylon Base (800 KG Tested) Wheel : Nylon Customization : Yes (Seat Fabric can be customised) Ideal User's Height Reference : 5'0"-5'8" Ideal User's Weight Reference : 40-90kg