This stacking chair by Swedish designer Jens Fager is more flexible than you'd expect thanks to a springy mechanism that joins the back to the metal frame (+ slideshow).

Jens Fager designed the Feather chair for Swedish office furniture manufacturer Edsbyn, but it's also intended for use in classrooms, restaurants or the home.

"The name Feather evokes elegance combined with spring and resilience," said Fager, explaining that the sprung backrest makes it more comfortable than most simple stacking office chairs.

"We wanted it to attract all consumers, from young design offices to the dining room of a huge factory. A chair for everyone," Fager told Dezeen.

Detachable, rubber-covered armrests allow it to be hung off the edge of a table when mopping the floor. The frame is available in chrome, white lacquer or silver lacquer and the seat and backrest are available in white ash, natural oak, black stained oak and natural birch.

The chair will be launched at Stockholm Furniture Fair in 2013.

Fager graduated from Konstfack University College of Arts, Crafts and Design in Stockholm, Sweden, in 2008 – we reported on a rocking chair from his RAW collection that was shown at Gallery Libby Sellers that year.

Other chairs we've featured recently on Dezeen include Ronan and Erwan Bouroullec's stackable wooden chair designed for a Danish university and a chair by Nendo that appears varnished but is actually wrapped in fishing line.

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Photographs are by Rasmus Norlander.

Here's some more information from the designer:

Feather has been developed in collaboration with designer Jens Fager and leading product developers/engineers. Together, we've created a chair that meets high standards of comfort and durability. Feather fits effortlessly into a wide range of environments: from the conference room, restaurant and office to school classrooms and even the home.

A subtle chair with character that comes in a welcome choice of designs. The name Feather evokes elegance combined with spring and resilience. The way that the backrest is attached gives a sprung effect for superb comfort.

We've put a lot of love into the armrest. The armrest comprises a technically advanced metal core that is then encased in pure rubber for durability and softness. It is ergonomically designed and also offers a pleasingly tactile experience with its gently rounded lines and a material that cushions the hands and underarms. The armrest also allows the chair to be hung up on the edge of the table for ease of cleaning below.

Frame standard: White lacquer, Chrome, Silver lacquer
Seat / backrest standard: White Glazed Ash, Natural Oak, Black Stained Oak, Natural Birch.
Fully upholstered / semi-upholstered in a standard Edsbyn fabric. Custom fabric on request.
Armrest: black or light grey. Custom colours are available for bulk orders.