Model 54 Mechanism/Materials

Donati Italy weight-activated synchro mechanism

Model 54 uses a Donati Italy weight-activated synchro mechanism designed to make reclining feel smoother, more balanced, and more controlled. The mechanism responds to user weight, helping reduce the need for constant manual tension adjustment during long work sessions.

The synchro action coordinates the movement of the backrest and seat, while the dynamic rocking backrest adds a more active sitting feel. This makes Model 54 a strong choice for users who dislike rigid chairs and want more movement through the day.

Materials and support

• Breathable mesh backrest
• High-density foam seat cushion
• Adjustable lumbar support
• True 4D armrests
• Glass-reinforced polymer frame components
• Nylon or metal base depending on selected variant
• Scratch-resistant casters for everyday workspace use