The GREENGUARD Certification Program (formerly known as GREENGUARD Indoor Air Quality Certification) gives assurance that products designed for use in indoor spaces meet strict chemical emissions limits, which contribute to the creation of healthier interiors. Achieving GREENGUARD Certification gives credence to manufacturers’ sustainability claims, backing them with empirical scientific data from an unbiased, third-party organization.

GREENGUARD Gold Certification (formerly known as GREENGUARD Children & Schools Certification) offers stricter certification criteria, considers safety factors to account for sensitive individuals (such as children and the elderly), and ensures that a product is acceptable for use in environments such as schools and healthcare facilities. It is referenced by both The Collaborative for High Performance Schools (CHPS) and the Leadership in Energy and Environmental Design (LEED) Building Rating System.

In ease, harmony and simplicity.

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A wide range of options for use in all living spaces such as homes, offices or public places. Comfy, cozy and adaptable despite its simple looks.

  • Structural flexibility with durable, elastic mesh backrest.
  • A variety of personalization options.
  • Optional armrests.

Trea Dyna-Support® reacts to the weight of you, eliminating the need to make any special adjustments. It is a weight activated mechanism with synchronous motion that helps keep your body in a healthy, natural position through average working hours.



Backrest Tilt

Trea’s backrest has a tilting capacity of 18 degrees and may be stabilized at a straight position. Thus, it supports the upper body in different sitting positions. 


Armrest Width

The adjustable armrest support of Trea helps reduce fatigue in the
shoulders and neck. 



Armrest Height

Easily and individually adjust each armrest height to minimize the risk of discomfort. Ideally, the work surface should be at level with or a rest a little lower than your elbow. Adjusting armrests to your task in this way helps reduce the recurrence of repetitive strain injuries like tennis elbow or CTS (carpal tunnel syndrome). 

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Being human is to care for future generations.



Trea has the (TSE) Suitability to Turkish Standards certificate and is manufactured from %12,4 recycled materials.

The fabrics used for manufacturing Trea have the OEKO-TEX 100 STANDARD, FLAME RETARDANT and RECYCLABLE certificates. The fabrics used in Trea’s backrest and seat have passed tests for abrasion resistance (Martindale test), light fastness (EN ISO 105-B02), fastness to rubbing (EN ISO 105-X12), and fire resistance that are conformity with European norms.

Trea has been certificated by GREENGUARD and GREENGUARD Gold.




Trea is manufactured at Bock GmbH & Co. and the facility holds DIN EN ISO 9001 and DIN EN ISO 9001: 2008 - Quality Management System Standard certificates. The products are assembled at Numaş A.Ş.facility, which holds ISO 14001 - Environmental Management System and OHSAS 18001 - Health and Safety Management System Standard certificates.

Waste Management

At Numaş A.Ş., the waste chemical materials like powder paint, wet paint, thinner, chemical material packaging, phosphate sludge, laser dust are sent to relevant companies for recycling or are disposed in a manner that will not harm the environment.


Trea’s packaging is made from 100% recyclable materials. To decrease energy use during transportation, Trea’s product packaging size has been kept minimal.


The manufacturing of the product and the quality standards of its materials allow the product to have a long life. The parts are replaceable and renewable. International bodies certify Trea’s high level of product security

End of life

The product is 91,5% recyclable. 99,73% of the materials used in the products may be used for other purposes. It is easy to disassemble.



Paul Brooks

Paul Brooks is a British designer who lives in France and works in Germany. Brooks is a reputed expert on office seating and his Anglo-German studio produces design solutions that are focused and conscious for furniture companies and suppliers in Europe and the United Sates. 

Please click for more information on Paul Brooks.


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