AC 5 Work Lowback Office Chair
The AC 5 Work Lowback is a typical low-back office chair from Vitra, known for its design features and functional advantages as follows:
1. Core Design Features
The AC 5 Work Lowback features a low, sloping backrest with an ergonomic angle optimized to fit the curve of the back, reducing pressure concentration during prolonged sitting. Its hidden mechanical design integrates the adjustment mechanisms inside the chair body, maintaining a clean appearance while avoiding interference from exposed parts during user movement. The open structure formed by the backrest and armrests allows users to move sideways or sit sideways, breaking free from the fixed sitting posture of traditional office chairs and suitable for work scenarios requiring flexible posture changes.
2. Dynamic Support and Health Benefits
The chair is equipped with a FlowMotion mechanism, supporting seat depth adjustment and synchronized forward tilt functionality. Users can adjust the seat depth according to their leg length to ensure a healthy 90ยฐ angle between the thighs and calves; when tilting forward, the backrest and seat cushion move in sync to maintain the natural curve of the spine, preventing back fatigue. This design has been clinically validated and is suitable for users who need to work at a desk for long periods or frequently adjust their sitting posture, such as designers and programmers.
3. Materials and Size Specifications
The AC 5 Work Lowback is available in two sizes:
- Standard Model: 585mm (width) ร 530mm (depth) ร 905/1025mm (height)
- Wide Model: 660mm (width) ร 530mm (depth) ร 905/1025mm (height)
The chair body is primarily made of fabric material, offering strong breathability for long-term use; the frame and five-star base are made of aluminum alloy, balancing lightweight construction with durability. Designer Antonio Citterio uses cohesive visual lines to ensure the chair integrates into modern office environments while meeting functional requirements.
4. Suitable Scenarios and User Groups
The low-back design makes the chair occupy less space, suitable for compact office areas or open workstations. Its dynamic support functionality is particularly suitable for users who need to frequently change their sitting posture and prioritize healthy office practices, such as creative workers and data analysts. The hidden mechanical structure and open backrest also make it a flexible choice for meeting scenarios or collaborative spaces, supporting communication and discussion in non-traditional sitting postures.
