Becozier Mordern Office Chair, High Back Computer Task Chairs Desk Chairs with Detachable Headrest, Adjustable Height, Mesh Cushion for Home and Office Conference Room (Unique Design: Blue) ERGONOMIC DESIGNStreamlined ergonomic design, high-end atmosphere, luxurious and restrained, with a unique shape to interpret the beauty of modern fashion, more suitable for the human body, supporting the back curve of the human body, lying more comfortable. HIGH-END MATERIALS360-degree swivel, heavy-duty nylon base and nylon smooth-rolling casters for great stability and mobility; Updated thick pad, soft texture slow down the pressure of the sedentary; TUV, SGS double certification gas rod, lifting 300,000 times without air leakage, sufficient air pressure, flexible lifting, good air pressure sealing performance, higher safety 360 Swivel & Customized HeightTilt function, Locking function at a different angle, height adjustment function, the back can be reclined and locked at 130 degrees for rest mode you desire, the overall height adjustment range is 13cm which is superior comfort and convenience for a good working, gaming or napping time. Easy to adjust at any height, easy and fast life is so simple RELIABLE COMFORTBetter to fit your spine, relieve your stress during long time working. Air layer spine structure back provide extra comfort and cool.360 degree swivel casters roll smoothly on the floor without abrasion, painted nylon five-star base with non-slip area features high stability and long service time, noise reduction to ensure silence and brings you a good mood. BIFIMA CERTIFICATIONMore reliable and sturdy, maximum capacity up to 265 lbs. Quality comes from decades of ingenuity and Tested & Certified Meets or exceeds all ANSI/BIFMA standards. Breathable, lightweight mesh use Nanoscale materials can resist transformation, abrasion. If there is any question, please let us know directly, we will deal with it immediately. <span class="a-text-bold">Soft fabric</span> material and task chair with a supportive back design. High back executive chair has armrest to make you <span class="a-text-bold">relax</span>. Ergonomically designed executive chairs help maintain proper posture by keeping the <span class="a-text-bold">spine erect </span>with their adjustable comfort and various features that include arm-rests, swivel base and many more. <span class="a-text-bold">Grey</span> soft fabric office chair size and look makes it <span class="a-text-bold">ideal</span> for any conference room or office seating. <span class="a-text-bold">Pneumatic</span> lift system - gas lift 3 systems come in the form of the lower handle which will smoothly adjust the seat height to your personal preference, <span class="a-text-bold">allowing you</span>personalized comfort. Tilting control mechanism - tilt lock chair also features a tilting option which allows the user to sit back in <span class="a-text-bold">a more comfortable</span> position &amp; allows you to adjust your chair to your comfort. High back task chair can also be used in the <span class="a-text-bold">office</span> for executive guest or <span class="a-text-bold">home</span>. Ergonomically designed, the independent pillow provides a special comfort for the neck. Full mesh air cushion, refreshing, breathable, washable.The entire mesh design seat cushion, air free flow, refused to damp hot, refreshing all day. TUV, SGS double certification gas rod, lifting 300,000 times without air leakage, sufficient air pressure, flexible lifting, good air pressure sealing performance, higher safety. BIFMA certificated Explosion-proof chassis and SGS certificated gas lift ensure the high stability and durability of the desk chair Pneumatic gas lift system comes in the form of the lower handle which will smoothly adjust the seat height to your personal preference, allowing you personalized comfort. Modern design: the armrest design is based on modern aesthetics, with bright colors designed into a minimalist style. The back of the armrest and the back of the chair make the whole chair look seamless, best reflecting modern aesthetics. Fantastic star base made of steel, Five Star Steel Foot Stand and Mute Caster The use of high-quality steel cast,galvanized steel feet,shiny bright,mighty anti-pressure drop does not deformation Mute  Caster- Rubber pulley,quiet and surable,stable bearing strong,excellent      material,no injury to the floor 360 degree rotation-The roller does not hurt the groud. Tilt lock use method: Unlock: Pull out the tilt lock handle when the chair is in an upright position. Locking: Insert the tilt lock handle when the chair is in an upright position. Soft Linen Fabric &amp; Foam Cushion. The Technical mesh breathable seat and back offers a modern look while keeping you cool. Breathable &amp; Moisture Wicking. The elasticity fits the contour of the buttocks more comfortably. All parts are shown in the photo, simple and easy to s\assemble Hardware packed into a Blister card with a red ribbon, no missed occurred