This shoulder rest is becoming increasingly popular due to its affordability, usability and comfort.
The standard petite PSR has a single ridge and a generally flat surface suitable for most younger players. To install, take the elastic loop and thread through the nut of the violin in a slip knot. Then take the shoulder rest and place it on the bottom of the violin's back. Following this, stretch the elastic over the shoulder rest and attach it to the two lowest corners of the violin in a triangle shape. This allows for movement of the shoulder rest to suit the player.