Eynpire 4/4 - 3/4 Violin Shoulder Rest Fits 3/4 - 4/4 Violins The foam is made from high quality, extra-thick, and extra-soft replacable neoprene for long-lasting comfort and excellent support. Made of a strong high grade ABS material. Integrated adjustable leg height means that there are no angle brackets to break and no thumb knobs to misplace and the left and right legs are identical allowing quick and simple setup and replacement.