This leather bassoon seat strap with an adjustable leather cup is on of the best on the market. It allows great adjustment and a frees the player to rotate the bassoon in the cup for most comfortable playing position. "An elegant, resistant leather band that is placed on the seat of the musician's chair, so all they have to do is sit down to lock it in place. Equipped with a bottom joint rest & Velcro fastener for fast, reliable sling adjustment.