The Advwin office mesh chair features lots ergonomic functions, including folding up arms, comfortable lumbar support,adjustable headrest, tilt and height adjustable.Curve along the waistline feel like hands on waist. Such a sympathetic design ensures the swivel desk chair is able to help you maintain a healthy posture and provide you with the ergonomic support you need. Elastic & Skin-friendly 3D air mesh chair for home office. Ventilated office chair seat and back prevents sweating from long seating, allowing you keep cool while leaning. Mesh material has higher flexibility and durability than normal sponge cushion. This chair is highly suitable for use as student study chairs, computer chairs, ergonomic chairs, desk chairs, gaming chairs, meeting chairs, task office chairs, computer task chairs, home office chairs. Feature 90-120 rocking style Angle & height adjustable, detachable curved headrest Wider & taller, breathable Mesh Backrest The full mesh seat bring a breathable experience Ergonomic design S-curved backrest Adjustable lumbar support to release sore back Flip-up armrests- Fit under your desk for space-saving Seat and armrests padded with thick high-density foam for longer periods of time in optimal comfort. 3-stage 80mm height adjustment gas lift-Explosion-proof and sturdy 360 swivel, premium universal 60mm racing wheels-Silent and smoothy experience Easy to clean Easy to assemble Ideal for gamer, home and business uses Specifications Materials: Base: Nylon Frame: Nylon Cover: Mesh Fabric Fill: sponge Caster: Nylon Overall Size: 60x60x116-126cm Seat height from floor:40-50cm Capacity Weight: 125 kg Colour: Black Weight (approx.): 11.5kg Assembly required: Yes Package Contents 1 x Office chair 1 x Assembly manual