The ball is a hard leather-seamed spheroid, using a circumference of 9 inches (23 cm). The ball provides a "seam": 6 rows of stitches attaching the leather-based shell from the ball into the string and cork interior. The seam on a different ball is well known and will help the https://chanceqahkr.theideasblog.com/36064265/match44-an-overview