Like Design by Linde Hermans
Linde Hermans designed a new creative seating concept with the wedge as a starting point for Belgian design label Indera. In the Wedge armchair, a wedge and wedge-shaped cushions provide ergonomics and modular seating comfort. With this, the chair can be fully attuned to the user's personality. By sliding the elements in relation to each other, you can play with the height and depth of the back.
All parts can be produced in the same material if so desired, but the choice of fabric or leather can also be exchanged for the seat, back and side panels and cushions.
Source:
http://www.interiornews.com/2013/03/the-wedge-as-a-starting-point