Kun Voce Violin Shoulder Rest 4/4-3/4 Size New lightweight shoulder rest is made from authentic aerospace-grade carbon-fiber which is very strong and features an aesthetically appealing design Carbon-fiber was also chosen for its acoustic and resonance properties which are as good, or better than, wood material Ergonomically designed, giving the same comfort as do all Kun products Patented folding mechanism and has innovative finite adjusting mechanism