Stackability at its finest

Mass Chair with Sellex

The Mass chair collection is a versatile, stackable family of chairs that can reach a height of 1.70 meters when stacked on a trolley. With a capacity of up to 40 units, it is perfect for outfitting multi-functional spaces with minimal footprint.

Sellex aimed to design a versatile and stackable chair collection for multi-functional spaces, prioritizing quality and functional design.

The Mass chair collection was created, offering stackability up to 1.70 meters on a trolley, accommodating up to 40 units with minimal footprint.

Customers and industry professionals have embraced the Mass chair’s ergonomic lumbar support, eco-friendly materials, and ease of use, positioning it as a leading choice. Recognition for prestigious design awards is anticipated.

IF Design Award 2023


Sellex is a furniture company from the In the Basque Country (Spain) that specializes in designing and manufacturing furniture for public spaces, such as offices, hotels, and schools. The company has been in business for over 30 years and has a strong presence in the Spanish and European markets. The company's products are known for their high quality, durability, and functional design.

Industrial design by Nacar Agency in Barcelona

A Functional and Sustainable Seating Solution

The Mass chair offers versatility and functionality for any space. Its easy-to-use clip system make it perfect for various settings. Ergonomic lumbar support ensures maximum comfort, and its eco-friendly materials use only half the raw materials of conventional chairs.

Industrial design by Nacar Design for Sellex


The Mass chair has been well-received by customers and industry professionals, and is being considered for prestigious design awards with its recognition pending.

Industrial design innovation by Nacar Design