Humanscale Summa conference - office chair

Product detailed description

Natural luxury and elegance  
Summa features a weight-compensating tilt mechanism and integrated armrests for surprising comfort and support throughout the workday. And with just one discreet lever for height adjustment, the chair remains beautifully elegant from every angle.

Thoughtfully sustainable  
The Summa chair’s piston and crossbar are made with an eco-neutral Chrome 3 finish, not the Chrome 6 finish that is often used in the manufacturing process and is dangerous to the user and the environment. The chair is also made with our alternatively tanned chrome-free leather, which eliminates the harmful chemical chrome used in most leather tanning methods.

Refined comfort 
Summa uses just one discreet lever for height adjustment and features a weight-compensating tilt mechanism for unexpected ergonomic comfort and support. Integrated armrests attached to the chair’s back move with the user, providing full support throughout the workday.

Timeless look 
The elegant contours of Summa soften the chair’s thoughtful design. Using just one simple yet discreet lever for height adjustment, Summa eliminates bulky control handles to provide a perfectly contoured and timeless aesthetic. Together with seven leather finishes and two backrest options, Summa can be customized to suit any use case in any environment, creating a sense of perfect visual harmony.

Designer: Humanscale Design Studio

The Humanscale Summa chair is in this specification: cross and piston in polished aluminum, completely in Ticino leather in Obsidian shade, universal soft casters, U1ULPTL10NS.

The chair has a 15-year warranty on the structure and a 5-year warranty on the upholstery material, when operating 8 hours a day, 7 days a week. The chair is delivered as a whole, so no assembly is required.

Characteristics:

• built-in armrests attached to the back to move with the user, supporting the user in every position
• simple and discreet height adjustment lever seamlessly integrated into the seat
• the sitter's own weight automatically adjusts the tilt tension
• the chair's backrest is available in three wood finishes or 7 upholstery options with matching stitching
• supports users up to 136 kg and 193 cm tall
• the chair is delivered as a complete unit, so no assembly is required
• upholstery specifications: HERE

Technical specification:

• design: full leather
• cover: Ticino leather Obsidian shade
• cross and piston: polished aluminum
• chair width: 711.2 mm
• base diameter: 647.7 mm
• seat height range: 393.7 - 520.7 mm
• casters: universal soft
• weight of upholstered chair: 19.5 kg
• weight of chair with wooden backrest: 20.9 kg

Our approach to product development and manufacturing at Humanscale embodies a mission to minimize our impact. We believe that the world’s best designs achieve more with less, so we act accordingly.

The Summa features a piston and base made with an eco-neutral Chrome 3 finish, rather than the Chrome 6 finish often used in a manufacturing process that is hazardous to both the user and the environment.

The Summa also features Humanscale’s chromium-free leather. This alternative tanned leather uses a synthetic vegetable tanning method to eliminate chromium, a harmful chemical otherwise used in most leather tanning methods.