With built-in advantages, Worth's Dream Seam™ is just what a pitcher needs. The raised seams on this series of balls give pitchers the ultimate in 88-stitch control. Dream Seam raised seams are 20% higher than the K-Master, and 80% higher than ordinary slowpitch softballs. Where the perfect pitch goes depends on only two factors. One is wind resistance. Dream Seam's raised seams enhance spin on the ball, creating greater differences in air pressure for a ball that moves around more on its way to the plate. The second is grip, and Dream Seam's TAC Grip covers give pitchers better control better "grippability" than ordinary softballs.