Office Chair Material and Size

The materials and sizes of office chairs vary depending on the specific product, but there are universal design standards and common material types.

Material Selection

The material of an office chair directly affects comfort, durability, and breathability. Common materials include:

1. Leather and PU Materials: For example, the Deli 4912 office chair uses leather and PU materials. These materials feel soft to the touch and have a high-end appearance, making them suitable for scenarios where enhancing the office environment's grade is desired. However, it should be noted that leather materials have relatively poor breathability, and prolonged use may cause a stuffy feeling. They need to be paired with breathable native sponge or mesh structures to improve the experience.
2. Native Sponge: As a filling layer, the density and resilience of the native sponge are crucial. High-density sponges (such as those above 45D) can provide better support and prevent sagging after prolonged sitting; low-density sponges may cause waist fatigue due to insufficient support.
3. Fiber Fabric Surface: Breathability is the core advantage of fiber fabric surfaces, especially suitable for summer or long-term office scenarios. Their surface pore structure promotes air circulation, reduces sweat accumulation, and has moderate friction, reducing the risk of body slippage.

Size Standards

The size of an office chair should conform to ergonomic principles to accommodate users of different body types:

1. Seat Depth and Width: The recommended seat depth (distance from the front edge of the seat to the backrest) is 40-45 centimeters, ensuring that the thighs are fully in contact with the seat and there is space behind the knees; the seat width (distance from left to right of the seat) should be greater than the hip width, usually 45-50 centimeters is appropriate, to avoid压迫 (oppression, here it means pressing on the hips) the hips.
2. Seat Height: The commonly used seat height range for adults is 40-50 centimeters, which should be adjusted according to the user's height. After sitting down, there should be a 5-10 centimeter gap between the back of the knees and the front edge of the seat to maintain smooth blood circulation in the legs.
3. Backrest Design: The height of the backrest should cover down to below the shoulder blades to provide waist support; the recommended backrest tilt angle is 100°-110°, which can disperse spinal pressure. Some high-end products are equipped with adjustable lumbar supports to further fit the waist curve.
4. Armrest Height: The top of the armrests should be level with the position of the elbows when they are naturally hanging down, avoiding arm suspension or excessive elevation. Adjustable armrests can adapt to different office scenarios (such as typing and reading).

Summary: When choosing an office chair, priority should be given to the breathability and support of the material, as well as whether the size conforms to ergonomic standards. For example, the leather+PU+native sponge combination of the Deli 4912 is suitable for users pursuing texture and comfort, while fiber fabric surface products focus more on breathability. In terms of size, adjustments should be made to the seat height, depth, and armrest position according to height and body type to ensure healthy prolonged sitting.