Office Chair Ergonomic Desk Chair - PU Cushion Mesh Midback Computer Chair with Flip-up Arms Swivel Chair with Adjustable Height & Lumbar Support Home Office Desk Chair, Black

【Super Comfort with Ergonomic Design】Ergonomic curved mid back perfectly supports your whole body very well. 6cm thick cushion with high density shaping sponge, soft and comfortable; Waterfall front seat reduces pressure and fatigue of your legs and help increase leg circulation. Padded armrests make you feel comfortable all day or flip arms up over the backrest for saving room space | 【Adjustable Office Chair】Pneumatic seat-height adjustment from 16.6"-20.5"; Rocking back and forth to have a rest by adjusting the knob beneath the seat; 1.2" adjustable lifting lumbar support, Unique Butterfly Shape bracket design for improved backrest stability | 【High Security】 This office chair has heavy-duty sturdy base with five-jaw, and using class-4 gas lift, more stable and durable, all parts pass BIFMA certification maximum load capacity reaches 300lbs | 【Easy to Install】This swivel mesh office chair comes with all hard wares and necessary tools. It takes may be 10~15minutes if following the manual instruction | 【5 Years Warranty】We offer a 5 years warranty for each product. If there are any quality problems, XISHE will provide customers with free replacement or 100% refund within 30 days, and we provide 24-hour online after-sales service. Please contact us if you have any questions