Envelopment Feel of Office Chairs

The envelopment feel of office chairs is primarily reflected in the design that fits the contours of the human body with the chair back and seat cushion, creating a wrapped experience through structural support and material feedback, commonly found in mid-to-high-end ergonomic chairs.

1. Envelopment Mechanism of Chair Back Design
The core of the envelopment feel of the chair back lies in dynamically fitting the curve of the human spine. Taking the Sihoo Doro-S300 as an example, its floating wing lumbar support adopts a butterfly-wing lumbar-following design, achieving active envelopment of the lumbar region through variable-angle support ranging from 90° to 105°. This design forms a pressure distribution with the human lumbar region through an elastic structure. When the user leans back, the lumbar support adjusts the support force according to the curvature angle of the spine, avoiding the "floating sensation" of traditional fixed lumbar supports. The NetEase Select Engineer Series, on the other hand, forms a continuous support surface from the sacrum to the cervical spine through a bionic S-shaped chair back, combined with high-elastic mesh fabric, providing uniform support for the back muscles in a sitting position and reducing local pressure.

2. Synergistic Envelopment Effect of Seat Cushion
The envelopment feel of the seat cushion needs to form a mechanical closed loop with the chair back. High-quality ergonomic chairs usually adopt a saddle-shaped seat cushion design, with a concave front end to avoid leg pressure and a raised rear end to cooperate with the chair back to form a wrapped buttock area. For example, the seat cushion of the Sihoo Doro-S300 adopts four-dimensional buffering technology, dispersing buttock pressure through different densities of sponge layers, and cooperating with the variable-angle support of the chair back to enable users to maintain a stable sitting posture whether sitting upright or leaning back. The NetEase Select Engineer Series, on the other hand, uses a composite structure of shaped cotton and breathable mesh fabric to provide moderate elastic feedback while ensuring support, enhancing the wrapped experience of the buttocks and thighs.

3. Support Enhancement through Materials and Craftsmanship
The realization of the envelopment feel depends on material properties and manufacturing processes. High-elastic mesh fabric has become a mainstream choice due to its good breathability and quick shape recovery. For example, the floating wing lumbar support of the Sihoo Doro-S300 uses DuPont elastomer, which can withstand more than 100,000 fatigue tests without deformation. The NetEase Select Engineer Series uses three-layer composite mesh fabric to improve tear resistance while maintaining breathability, ensuring that the wrapped shape can be maintained after long-term use. In addition, the connection between the chair back and the seat cushion needs to adopt seamless craftsmanship to avoid direct contact between the hard frame and the human body, further optimizing the wrapped experience.