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Heaviest Office Chair
Admin October 09, 2026
There is currently no definitive information indicating which office chair is the heaviest. However, we can introduce the Sihoo C500, a heavy-duty ergonomic office chair suitable for large-bodied users.

Overall Design Features
The Sihoo C500 is a heavy-duty ergonomic office chair specifically designed for large-bodied users. It has been carefully considered in terms of dimensions to provide a wide and comfortable support surface. The size design of each key part fully takes into account the needs of large-bodied users for space and support, enabling it to better fit the body's curves and reduce fatigue caused by prolonged sitting.
Specific Dimensions of Each Part
- Seat Cushion: The seat cushion measures 51 by 51 centimeters square. This large seat area provides ample room for the buttocks of large-bodied users, avoiding the sense of confinement caused by a small seat cushion. It allows users to sit more relaxed, dispersing the pressure on the buttocks and improving sitting comfort.
- Lumbar Support: The lumbar support has a width of 51 centimeters. The wide lumbar support can better cover the lumbar region, providing comprehensive and strong support for the waist. For large-bodied users, the waist bears relatively greater pressure. An appropriate lumbar support can effectively reduce the burden on the waist, prevent the occurrence of lumbar diseases, and maintain the natural physiological curvature of the waist.
- Upper Part of the Backrest: The width of the upper part of the backrest is 53 centimeters. This design further expands the support range of the backrest, enabling it to better fit the back's curves and provide stable support for the back. Whether sitting upright or reclining for a rest, it allows the back to feel comfortable support and reduces tension in the back muscles.
- Headrest: The headrest has a width of 39 centimeters. An appropriate headrest width ensures that the head receives good support during rest, preventing the head from swaying left and right, reducing neck pressure, and allowing the neck to remain relaxed during long hours of work or rest.
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