FITS ONLY FULL SIZE INSTRUMENTS. The “Komfort Kurve Plus” violin viola shoulder rest is perfect for the performer who desires a more stationary feel; features include: a wider squared rounded top over the collarbone, thicker padding over the shoulder filling more space between the jaw and neck, with a mild curve that will grip the back of the shoulder. One “PSR Elastic Band” and one “PSR Magic Strip” are currently included. Try the “STRAIGHT” or “ANGLED” placements for your preferred comfort, made of resilient contoured ergonomically designed foam with great memory to bounce back to its original shape. Our PATENT NUMBER 7,262,352 design curve assists proper placement for your shoulder rest.