SPECIFICATIONS Backrest Height: 125mm- 800mm Backrest height: 50*48cm Brand Name: Naspaluro Folded: No General Use: Commercial Furniture Hign-concerned Chemical: None Installation Method: Assembly Is Rotatable: Yes Material: Lacework,Polyester, Nylon, Aluminium, Sponge Name: ErgonomicMesh Office Chair Origin: Mainland China Product weight: 9kg Seat height: 93-98cm Seat size: 50cm Specific Use: Office Chair Style: Executive Chair,Lift Chair,Swivel Chair Type: Office Furniture With Handrails: Arms Included With Rollers: Yes is_customized: No Ergonomic Office Chair with Slide Seat Mesh Seat Adjustable Lumbar Support Angle and Height Adjustable Home Office Gaming chair Description 1,90 Flip-up Armrests: Ergonomic chair with adjustable padded armrests provides shoulder and upper body support, suitable for most people to relax yourself when sitting for a long time. Office chair allows you to flip the arms up and put the chair under the desk for saving space. 2,Ergonomic Backrest:Curved backrest is constructed to fit the human anatomy and provide an ergonomic support to keep you focused and relaxed. Premium polyester mesh backrest keeps the body cool and cozy by enabling continuous airflow. Rocking mode brings you more ease while resting. 3,Less Pressure Seat:The seat cushion is filled with a whole piece of high-density sponge, soft and strong to ensure minimum pressure on your hips and make you maintain a comfortable state. This home office chair will help you reduce fatigue and keep you productive all day. 4,Authoritative Quality Inspection:SGS of Grade 2 Certified Gaslift, more safe and stable. Heavy-duty base and nylon smooth-rolling casters provide the ergonomic chair with excellent stability and mobility. It also passed the push back test of 102kg and static pressure of 950kg. 5,Easy to Assemble:A detailed assembly manual and all needed parts are included. You can easily assemble the computer chair by following the steps of the instructions without additional tools. It is easy to set up and can be done by one person in only 15 minutes. Specification: Name:ErgonomicMesh Office Chair Seat size: 50cm Seat height: 93-98cm Backrest height: 50*48cm Material: Polyester, Nylon, Aluminium, Sponge Product weight?9kg Flip-up Armrests Make Your Room Simple and Neat Product Details 90-105 Rocking / 10cm Height Adjustable / 360 Swivel Work Mode forNormal Daily Use / Rest Mode for Space saving Green Ergonomic Office Chair ErgonomicDesign: Give your body enough support / Relax Shoulders / Back Protection Lumbar Support / Coccyx Protection Saving space?Diameter:60cm/24inch Product Details?10cm Adjust Height / Adjust Height / Tilt Tension Adjustment High Resilience Foam Cushion? OURS?Relieve pressure on the hips OTHERS?Soreness from prolonged sitting Product Details 100,000 Times:Handrail Durability Test 100,000 Times:Bracket Durability Test 100,000 Times:Gas Lift Pressure Test 100,000 Times:Base Durability Test 120,000 Times:Caster Rolling Test