Brand New in the Box! MOOJIRS Ergonomic office chair with adjustable cushion depth | Mesh backrest | Adjustable lumbar support | Adjustable 3D armrest|Adjustable chair back elasticity and tilt angle|Standard carpet casters FEATURES: ERGONOMIC DESIGN - Five ergonomic adjustment functions are provided to help users find the ideal sitting posture for long-period or short-period sitting; the adjustable headrest height, lumbar support height, seat cushion height and depth, chair back elasticity and tilt angle, armrest height and front-back and left-right positions, all provide users with a customized seating experience. BIONIC CURVE BACK - The MOOJIRS chair is designed to mimic the shape of the back and waist of the human body, that is, the chair back has a design that displays the natural curve of the human spine. The back of the chair naturally fits the four physiological bends of the spine, provides the best lumbar support and maintains the correct alignment of the spine, thus better protecting the user's lumbar spines and reducing back fatigue and soreness caused by long-time sitting. MULTI-DIMENSIONAL ARMREST ADJUSTMENT - Our engineers designed a brand-new handrail through a comprehensive analysis of the stress points of the shoulder, elbow, wrist and palm. Compared with the armrests of traditional chairs, the armrest of the MOOJIRS chair has a wider surface, is made of softer filling, offers more varied adjustment functions (the armrest can be adjusted in height by lifting, and in front-back and left-right positions by sliding). LASTING COMFORT - The mesh of the backrest has excellent breathability and flexibility, helps users maintain a uniform and comfortable skin temperature, and provides a stronger sense of wrapping and support for their backs; The seat cushion is filled with high-resilience sponge with natural cotton and linen cloth covering, which are soft, comfortable, and has good air permeability, providing you with continuous and consistent support. EXCELLENT QUALITY - The high-strength nylon frame, explosion-proof chassis, and pneumatic rods ensure the safety and structural stability of the chair (tested by three major quality supervision agencies, including BIFMA, SGS, and TUV) GREAT ITEM AT A GREAT PRICE!!