The shell is supported by a steel base with four slender legs. There is also a swivel version with a base made from either polished or powder-coated extruded aluminium.
The chair is available in a wide range of colours, including black, light blue, stone-grey, red-brown and beige.
The black version of the chair is made from black polypropylene panels taken from the interiors of scrapped cars. For the other colours, post-industrial waste is used and combined with a pigment.
The basic plastic shell can also be customised with made-to-order upholstery available in various fabric or leather finishes.
In order to extend the lifespan of the product, Welling designed the chair to be as simple as possible to dismantle so that it will be easy to repair.
"When creating a design with a simple visual expression, the details become extremely important," said Welling.
"The amazing thing is when everything – comfort, construction, function, materials, production, environment and ergonomics – is balanced together, such details slot seamlessly into place."
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