All the violin is made only with blue jeans-denim. Looks and most important play very good.This a unique violin with painting back . For all my original musical instruments, I give a guarantee of free repair because I am the only one who construct this instruments. I have the patent for all strings musical instruments which are made from soft and flexible materials. (paper, cloth, synthetic leather, plastic, etc), and mixing of these materials. Prepares and other string musical instruments and are interested to working and cooperation with galleries and making exhibitions. In these galleries exhibitions will be make a musical events with the musical instruments that exist in the exhibition. This instruments is sold ,but i can made a new one. I put here and one sound sample. http://www.muziboo.com/ivigo/music/jeans-denim-violin-sound-sample/ and video http://www.youtube.com/watch?v=1qKwQ-vuOjQ All this violins is the first i make and is a prototype. Is a full playable ...but have 1 or 2 small problem in some points. For this reason this violins is only for the exhibition and shows and not for a sold. If someone wants to buy one, would I make a new similar in appearance but not the same . All the instruments is unique. If someone wants something special, can send me and the material that wants to build a musical instrument.