A single loop simultaneously performs the function of the arm and backrest on Konstantin Grcic's Allstar chair for Vitra, which features in the Dezeen offices in Hoxton.

The Allstar chair, which was chosen by architect Pernilla Ohrstedt for Dezeen's new canalside office in east London, was designed to be used both in the home and the workplace.

Its main structure is formed by a robust plastic loop, which stretches around the back of the chair to form a pair of armrests while supporting an upholstered back.

Levers on the underside allow users to adjust and lock the positioning of the backrest, depth of the seat and the chair's height.

Although the seat cushion is only available in black, the rest of the chair comes in a number of colours. The plastic loop frame can be blue, white, green or black, while the backrest can be upholstered in fabric or leather in an even more extensive range of colours.

As the boundaries between home and office continue to blur, Grcic designed the chair to be used in both environments.

"The chair was designed to provide office workers with a relaxed home feel and sense of familiarity," said Vitra. "Allstar is emblematic and appealing as it seems this chair has always existed, which inspires a feeling of trust and security allowing today's fast-paced office to slow down."

In the Dezeen office, the all-black Allstar chairs sit around square black tables custom-designed by Ohrstedt.

The tables' metal legs are offset from the edge to shift each person's workspace off-centre, allowing views across the office and space to move around the back of chairs.

Ohrstedt was also behind Vitra's presentation at this year's Orgatec trade fair, which took over an entire hall with products by 12 brands and small tech startups.