Back Type : High Back Back Material : Nylon (A Grade) Back Upholstery : Original Korean Mesh Headrest : 4 Way Adjustable Armrest : 2D Adjustable Armrest Functionality : Up/Down, Front/Back Seat Cushion : 50 Density PU Molded Cushion Seat Fabric : Sponge Mesh Lumber Support : Adjustable Lumbar support Mechanism : Synchro Multi Lock Mechanism Mechanism Tilt Type : Synchro 3:1 Mechanism Lock Type : Multiple Angle Locking System (90 -135 ) Gaslift : BIFMA Level 5 Base : Nylon Base (800 KG Tested) Wheel : Nylon Special Feature 1 : Recline Lock at Multiple Angle Customization : Yes (Seat Fabric can be customised) Ideal User's Height Reference : 5'2"-5'10" Ideal User's Weight Reference : 50-100kg