S 12 Classic M softballs have blue stitching and are approved for play in the USSSA. S Gold Dot softballs feature a three-piece technology that has an inner layer that gives this softball consistent spin and durability. Added to these softballs is the C-LOK adhesive and moisture barrier and then the SYCO composite leather cover for more durability. Size: 12"'s 12" Classic M softballs have blue stitching and are approved for play in the USSSA Added to these softballs is the C-LOK adhesive and moisture barrier and then the SYCO composite leather cover for more durability.