The Bonmusica Viola Shoulder Rest is height, width, and curve adjustable so that the player may obtain a precise fit and be as comfortable as possible. The curved padded base can be easily manipulated to fit the exact contour of the player's shoulder, holding the instrument in place while promoting hands-free stability for easy shifting and vibrato. The foam padding is highly resistant to wear and is extremely comfortable. Unlike many other shoulder rests, the Bonmusica can be used by left-handed players. This popular shoulder rest aids players who suffer from previous injuries or arthritis as it allows the shoulder to remain relaxed while keeping the instrument at the proper height and angle, rather than drooping forward. All Bonmusica shoulder rests are German-designed and German-made.