These inexpensive foam sponges are shaped to help younger players hold up their instrument. Secure to the instrument with one or two rubber bands. Easy to remove when storing instrument. Not recommended for larger players or larger instruments like viola, as they do not support as well as a framed shoulder rest.
Large fits small violas and 3/4-4/4 violin
Medium fits 1/4-1/2 violin
Small fits violins 1/8 and smaller