Comfortable Memory Foam that grips the back of your instrument and secures with a fine, clear band.  Will not fall off, easily fits into your case, very lightweight, too!  Ergonomically contoured foam is comfortable and allows freedom of playing.  The PSR Original has a steep slope that helps the musician keep the instrument from drooping over the chest. 

This model allows the performer comfort and flexibility to pivot their instrument over their shoulder.  It has a lower square shaped rounded top that sits over the collarbone, very mild slope extending towards the shoulder and the curve over the back of the shoulder is not pitched as steeply as the original. 

Fits full size violas.