170° Flat-Lying Office Chair
The Bajiujian C4 office nap dual-purpose chair can achieve a 170° flat-lying position, while other brands such as Yipinhui's computer chairs can achieve a 180° flat-lying position, but do not explicitly mention a 170° flat-lying design. Here is a detailed analysis:

Bajiujian C4 Office Nap Dual-Purpose Chair
This product is clearly labeled as supporting a 170° flat-lying function and falls within the category of ergonomic gaming computer chairs. Its core design lies in achieving a comfortable posture close to lying flat through a multi-angle adjustment mechanism (such as a chassis that can lock the recline angle, a thickened cushion, and an adjustable headrest), while also taking into account the sitting support needs in office scenarios. The 170° angle design not only avoids the risk of sliding due to the backward shift of the center of gravity when lying completely flat (180°), but also disperses body pressure through the slightly curved back arc, making it particularly suitable for office workers who need short noon breaks. In addition, the ergonomic structure (such as lumbar support and adjustable armrests) can reduce the pressure on the spine from maintaining the same posture for a long time, enhancing comfort during use.
Comparison with Other Brands
Taking Yipinhui as an example, although its computer chairs support a 180° flat-lying position, they do not explicitly mention the adjustment function for the intermediate angle of 170°. A 180° flat-lying position is closer to the form of a traditional recliner and is suitable for completely relaxed rest scenarios, but it has lower requirements for the dynamic support of an office chair. If users need to balance office work and noon breaks, a 170° design may better meet actual needs—it retains some sitting functionality while allowing quick switching to a rest mode through slight angle adjustments, avoiding the cumbersome operation of frequently adjusting the backrest angle.
Selection Recommendations
If office work is the primary focus and noon breaks are secondary, prioritize the Bajiujian C4, which is clearly labeled with a 170° flat-lying function. Its ergonomic design can balance the support needs for sitting and lying postures. If there are no strict restrictions on the flat-lying angle and more attention is paid to the comfort of lying completely flat, further consideration can be given to 180° flat-lying products from brands such as Yipinhui, but it is necessary to check whether they are equipped with anti-slip designs or safety locking devices.




