YONISEE Office Chair, Ergonomic Desk Chair -Dual Backrest Design with 2D Lumbar Support & Adjustable Headrest. Swivel Computer Chair with Flip-up Padded Armrest, Thickened Seat for Home/Work/Gaming

[Ergonomic Office chair]：Designed with a scientifically designed dual backrest, adjustable headrest, and thickened seat cushion, the office chair provides comprehensive comfort support for you. Multi-adjustable design allows you to customize the seating experience to your body shape and posture, eliminating the discomfort of long hours of desk work.
[Dual Backrest Design]：Perhaps what you need when you're working isn't an extra back cushion, but a dual-backrest office chair. Wide curved 2D lumbar support adapts to waist natural curve, 3cm front/back adjustment providing precise support to keep your lower back relaxed.
[Custom Headrest]：The headrest can be adjusted rotated 50°, allowing you no longer to worry about the headrest only being able to be adjusted up and down. Whether you need to sit upright to work or lie down to rest, it provides the best support angle for your head and neck.
[Adaptable Space-saving]：Features convenient 90°flip-up padded armrests that tuck neatl