The Hunkyjunk Fractal ball stretcher is made of a Plus SILICONE mix designed for longer ball-stretch play. This design is the perfect size with the right fit feel and soft grip that stretches to fit bigger ball sacks and beginner high and tight ball bags. The thicker material makes the middle fit tighter for more squeeze where it needs to be, while the top and bottom stretch a bit more. This puts the grip where it should be, the flat rubbery inside stays put with no slipping or pinching and has a velvety finish, feeling smooth on your skin. Using lube stretch the ring while standing and tuck your balls through, it is easiest to put on post showering so that your sack is hanging lower.