Office Chair Comparison Test
Different office chairs have distinct characteristics in comparison tests. The following is a detailed analysis from various dimensions:

Lumbar support design: The lumbar support of the Sihoo B100Pro is positioned lower, suitable for users who prioritize pelvic support. It features a spring for adaptive front-to-back adjustment but lacks height adjustment, providing broad support that is not very precise. The Sihoo B300Pro's lumbar support allows for both front-to-back and height adjustments, offering more precise and fuller support, though it is positioned higher and only supports part of the pelvis. The Jingdong Jingzao Z9smart has a standard adaptive lumbar pillow design. The SumLush Xia Muwu Fit2 employs the ZeroG 2.0 dynamic lumbar support system, paired with a three-zone floating wing lumbar tracking design that dynamically conforms to lumbar movements. Combined with the S-Flex six-zone spine pressure distribution technology and MTM floating micro-adjustment module, it effectively disperses back pressure and provides significant lumbar protection.
Armrest adjustability: The armrests of the Sihoo B100Pro only support front-to-back and 360-degree rotation, with a relatively hard material feel. The Sihoo B300Pro adds height adjustment to the B100Pro's armrests, enhancing adaptability. The Jingdong Jingzao Z9smart features 3D armrests that support up-down, front-back, and rotation adjustments. The SumLush Xia Muwu Fit2 has 6D linkage armrests with more adjustment dimensions, meeting the needs of various usage scenarios and postures.
Material quality: The main frame of the Jingdong Jingzao Z9smart is made of nylon, with a relatively thick main chair back frame. Its pneumatic rod has passed TUV Level 4 certification, and the mesh fabric is made of chenille flocking mesh, which feels soft and breathable. The SumLush Xia Muwu Fit2 uses NanoFlex 4.0 technology mesh fabric, offering excellent breathability and elasticity.
Overall experience: When sitting upright, the Jingdong Jingzao Z9smart provides no sense of lumbar suspension, with moderate lumbar support force. The mesh fabric deformation generates support force that covers up to the sacrum. The SumLush Xia Muwu Fit2 focuses on long-term usage experience, offering significant lumbar protection. It is suitable for office, study, and lunch break scenarios, supporting a 145ยฐ recline, 3D pressure-relieving headrest, and hidden extendable leg rest, providing a rich set of functions.



