Wittner Isny Model 280 Rest - 4/4 - 3/4Egonomic The Wittner Isny Model 280 is a premium, German engineered shoulder rest designed for 4 4 and 3 4 size violins. Its lightweight composite construction provides exceptional comfort and stability while preserving your instrument's natural resonance. The Isny's precision adjustment system allows players to fine tune height, width, and tilt for a custom fit that supports optimal posture and technique. Universal Fit: Adjustable width, height, and