If You're Always Frustrated To Bend Over To Find The Adjustment Control And Have To Use Force To Push It,You Need To Know More About The Wire Control Mechanism Of An Ergonomic Office Chair.Wire Control Mechanism Makes The Controller Centralized And Good-Looking. The Controllers Are Located Just By The Sides Of The Seat.You Can Easily Reach Them And Adjust The Chair Without Bending Over And Major Force.Seat Is One Of The Key Elements Of An Office Chair.The High-Quality Gas Lift Ensures The Safety And The Seat Contains The Whole Control System Which Is The Key To Make The Chair Comfortable And Useful. Wire Control Mechanism Ensures The Endurance Of The Chair Functions.High -quality - scientific ergonomic design, easy to assembleWire Control Mechanism - Remarkable endurance due to unique wire control mechanism and super convenient to adjust the chair without bending overAluminum Alloy Frame - Full aluminum alloy frame ensures a long-time endurance and elegant & bright designElastic & Breathable Premium Mesh - Strong stability, good elasticity, and great heat dissipation, which helps to prevent the chair from a bacterial growth during useBig & Mute Function Wheels - 2.5 inches big wheels with mute covers inside the base, which helps to noise reduction when the chair is movingClass 4 Gas Lift - BIFMA certificated and safe-guarantee. Most office chairs use class 2/3 gas lift. Ergo PLUS 743 use class 4 gas lift to provide a better qualityHigh -quality, scientific ergonomic design, easy to assembleUp & Down Backrest; Depth Adjustable Seat; 2D Adjustable Headrest4D Adjustable Armrest; 135° Recline Angle; Dynamic Lumbar Support