Viva La Musica Ergonomically-designed solid wood Viva La Musica shoulder rests come in several styles, all of which are fully adjustable for height and width, plus have a unique lateral adjustment system to allow a custom fit for your shoulder. Ribbed rubber feet secure the rest with minimum contact with your instrument, allowing for the best resonance and projection. Standard Model The solid wood body and thick foam padding are complemented by black hardware for a classic look. 4/4 - 3/4 size.