Butterfly Sapphira is a versatile rubber designed for both developing players and seasoned veterans alike. It offers excellent performance for beginners in both offensive and defensive play, thanks to its consistent and easy-to-control nature. More experienced players can leverage Sapphira's qualities to execute aggressive shots effectively. Featuring a medium sponge density and superior spin compared to Sriver, Sapphira stands as an excellent choice for a wide range of player types and playing styles. If your aim is to maintain endurance and surpass your opponents, Sapphira is the ideal selection.