Less harsh than solid metal counterparts, this Leather Ball Stretcher measures 9cm (3.5 inches) in length and is also fully adjustable. Simply thread the leather tie up through the metal eyelets to adjust the tightness of fit accordingly. The inner of the ball stretcher is also leather with a thin brushed suede lined piece of leather going between the skin and the metal eyelets. Material: 100% real leather. Wipe clean.