out of plastic has a price tag of 300 euros, and it's become a bestseller for swiss furniture maker vitra. so is the linkable algue screen. 5 million have been sold so far. the alcove sofa is also a big hit. translator: when you face the two sofas towards each other, you create a little conference room sofment that goes over really well in big, industrial office complexes. it's a flexible solution and it costs a company less than building new walls. >> the dynamic duo comes up with their designs here in their paris atelier with a team of six other people. together they work on about 20 projects at any one time. of on it takes years to take a concept from the drawing board to a finished product. but the brothers believe teamwork is the key. 39-year-old ronan and 34-year-old erwan have been working together for a decade. translator: we didn't make a conscious decision to work together. erwan started helping me and took over an important role. now we make all of our decisions as a team. >> they're both perfectionists but with different personalities and they on clash. translator: we never co