Competition: we're giving readers the chance to win one of five copies of a new book containing over 800 drawings by the Bouroullec brothers.

Congratulations to the winners! Michael Hanley from the UK, James Roach from the UK, Szilvia Marcella Varga from Hungary, Jenny Vogler from Germany and Marcin Kwietowicz from Poland all won a copy of Ronan & Erwan Bouroullec: Drawing.

French designers Ronan & Erwan Bourourellec have compiled a selection of their drawings from sketchbooks, loose sheets or digital archives between 2005 and 2012.

The sketches show the brothers' form and pattern studies for furniture and installation designs.

The book contains over 800 images originally drawn in pencil, ballpoint pen, felt-tip pen or on a graphic tablet.

Drawings ranged from the size of a Post-it note to an A1 sheet, but have been formatted to fit the A4 pages.

Published by JRP Ringier with art direction by Cornel Windlin, the paperback book is now available to buy in bookstores worldwide.

This competition is now closed.

Five winners will be selected at random and notified by email. Winners’ names will be published in a future edition of our Dezeen Mail newsletter and at the top of this page. Dezeen competitions are international and entries are accepted from readers in any country.

We filmed a movie with Erwan Bouroullec in which he describes the textured tiles launched at Clerkenwell Design Week last year - watch it here.

See all our stories about designs by the Bouroullec brothers »