KUN Violin Shoulder Rest Original 4/4 Shoulder rest for violin 4/4 size Made in Canada Some people also use it on 3/4 violins. It is not foldable. It has a simple design and is durable. A standard shoulder rest that is popular with both professionals and amateurs. It has a simple design, yet is durable and long-lasting. The width, angle, and height of the legs are adjustable, allowing it to fit the violin securely. No smokers, no pets. No use of fabric softener or synthetic detergents in the house.