It's a very tongue-twisting name, and a very strange sofa. But you'd better not underestimate it, for it won the design award at Imm Cologne 2008. I think after seeing the picture, everyone should understand why it's called "Wall" hair. This "Wall" hair can be sat on from both sides. The backrest is made of highly elastic fabric, similar to a "membrane". It must be very comfortable to sit on.