Sanshin shoulder strap (wine red) New, unused, free shipping Attaching this to your sanshin reduces the burden on your left hand (the hand that presses the positions), making it easier to play the sanshin. When playing standing up, it makes the sanshin much easier to play, reducing the burden on both your left hand and your right hand (the hand that plucks the strings). *This is a popular wine red colored strap.