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Office Chair Doro

Admin October 09, 2026

The Sihoo Doro series is a line of ergonomic chairs under the Sihoo brand, including models such as the Doro S300 Second Generation and the Doro C300. Here is a detailed introduction:

Doro S300 Second Generation Ergonomic Chair

  • Unique Lumbar Support Design: It features a left-right split floating wing lumbar support that directly supports the left and right lumbar muscle groups, providing a wrapped-around feeling for the waist and enhancing comfort during sitting. When the sitting posture changes, the angle can be adjusted via a pneumatic rod for precise lumbar support, allowing for adjustments to the support angle to meet different sitting posture needs.
  • Synchronized Contouring Function: Not only can it achieve infinite suspension at any angle, but it also has the function of keeping the seat cushion and backrest in sync with the body regardless of the posture. This ensures effective support for the hips, waist, and shoulders, greatly relieving the pressure caused by prolonged sitting.
  • Extra-Large Recline Angle: It can achieve an extra-large recline angle of 145 degrees, providing users with more comfortable posture options during rest and meeting diverse usage scenarios.

Doro C300 Ergonomic Chair

  • Flexible Headrest Adjustment: The headrest has a 2D dual-axis adjustment. The pillow surface can rotate, and the pillow shaft part can move forward by one notch to provide neck support. When released at the lowest position, it will bounce back, and there is a vertical axis for height adjustment, allowing users to adjust to the appropriate neck support position according to their own needs.
  • Backrest and Lumbar Pillow Design: The backrest and lumbar pillow can be adjusted in height simultaneously, with four levels and a 6-centimeter adjustment range. The backrest and lumbar pillow are separate independent structures, functioning as gliding mechanisms that can slide up and down. During recline, the support position does not shift, ensuring stable support at different recline angles.
  • Highly Adjustable Armrests: The armrests are 6D bionic joint armrests that can be adjusted forward and backward, rotated in the plane, and rotated around the axis. They offer a wide range of adjustability and can change the inner width of the armrests significantly, meeting users' needs for arm support in different usage scenarios.