The yarn and thread , while tightly wound around the core , deadens the impact of the bat hitting the ball .
The yarn and thread , while tightly wound around the core , also prevents the ball from suffering deformities and becoming misshapen after being hit hard repeatedly .
The yarn and thread , while tightly wound around the core , deadens the impact of the bat hitting the ball and also prevents the ball from suffering deformities and becoming misshapen after being hit hard repeatedly .