Landesgewerbeanstalt Bayern (LGA)

Germany based Landesgewenbeanstalt Bayern has a history going back to the end of 1860s. LGA, which belongs to TÜV Rheinland Group since January of 2007, certifies products that have internationally acclaimed high quality and security standards. LGA which has offices and laboratories in over 30 countries is a certification institute which specializes in especially furniture and toys.


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.


The core of productivity.


  • Nurus Core Fml Header Slide

For healthy and dynamic work environments; Core is a high-performance task chair that minimizes fatigue and potential physiological disturbances caused by prolonged working periods. Fit Core to your body -and to your task- through adjustable backrest tilt and height customization options. You may further personalize your chair through individual armrest and neck support adjustments. With Core, you will feel an increase in capacity and comfort at work.

Core offers two mechanism options that serve different purposes:

Dyna-Support® is response: It reacts to the weight of you, eliminating the need to make any special adjustments. Perfect for touchdown areas and shared working environments.

Pro-Support® is adaptability: It may be personalized for extra comfort, regardless of body size or type. With quick and fine adjustments, Pro-Support® offers backrest tension to be personalised. Core Pro-Support® encourages a healthy sitting habit as you work. Ideal choice for all living and working environments, as well as executive offices.


Backrest Tilt

Researches have concluded that chair design has the greatest effect on the pressure distribution on our bodies while seated. We design for dynamic sitting and the right posture before all. A balanced, stress-free sitting and correct weight distribution leads to a healthy posture and improved circulation. 




Seat Slide

Adjustable seat slide allows for a good 10 centimeters of back-forward adjustment. It helps users with different upper leg length to sit in a healthy position.


Backrest Height

Core’s backrest height may be adjusted for your height or working positions. With this feature, Core increases productivity at work by supporting the upper body.


Armrest Width

Minimize articular disturbances caused by long hours of work. Reduce accumulating fatigue in the shoulders and the neck by customizing the armrest width to your body and your task. 



Armrest Height

Easily and individually adjust each armrests’ 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).



Armrest Pad Width

Easily adjustable armrest pads for your comfort.



Neck Support Height

Minimize the conditions that may occur in the neck with adjustable neck support height. 


Neck Support Angle

Core’s neck support angle adjustment, offers ease of use for users with different neck structures.


  • Me Too Core Sirt 7
  • Nurus Metoocore Oturma Derinlik 6
  • Nurus Me Too Core Sirt Yukseklik 6
  • Nurus Me Too Core Kol Genislik 1
  • Nurus Core Kol Yukseklik 4
  • Nurus Metoocore Kol Genislik 5
  • Nurus Metoocore Kafa Yukseklik 3
  • Nurus Metoocore Kafa Rotate 5

Being human is to care for future generations.



Core has the (GS CERTIFICATE)- German quality approval certificate and  (TSE) Suitability to Turkish Standards certificate and 14,4% recycled material is used in its production. It is 93% recyclable and the materials used in the manufacturing of Core are 99,75% reusable for different purposes.

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

Core has been certificated by GREENGUARD and GREENGUARD Gold.



Core is manufactured at Bock GmbH & Co., which has the DIN EN ISO 9001 and DIN EN ISO 9001:2015 - Quality Management System Standard certificates. The product assembly for Core is made at Numaş A.Ş. facility, holding the ISO 14001 - Environmental Management System Standard 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.


The packaging of the product is made from 100% recyclable materials. To decrease energy use during transportation, the product packaging size of Core has been kept to a minimum.


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 Core’s high level of product security.

End of Life

Core is 93% recyclable. 99,75% of the materials used in the products may be used for other purposes. It is easy to disassemble.

Justus Kolberg

Born in 1962, Justus Kolberg graduated from the Industrial Design Department of Muthesius College in Kiel, Germany in 1990. His striking designs drew widespread attention while working in Spain and Germany. He designed many successful series for international companies like Castelli S.p.A, Studio Giancarlo, Techno S.p.A., and Wilkhahn Entwicklungs GmbH.

Kolberg quickly established himself as a well-known designer and his amazing career is the result of his smart designs containing modern technical architecture. Kolberg continues to work as a freelance designer since 1997, and his passion is sitting groups and desk designs.

For more information on Justus Kolberg, please click here.




Mobile Not Portrait