Worth 12 NSA Super Gold Dot Extreme SYCO Slowpitch Softballs Superdot 3-Piece Technology is a step above competitors 2-piece balls. The inner layer consists of Worth s proprietary mixture of polyurethane and isocyanate blended together and perfected in the Super Dot formulations over the years for consistant spin and durability. Add to this C-LOK adhesive and moisture barrier second layer technology that locks on the pro grade cover (third layer) to the core and it is easy to see why the Super Dot is the 1 selling brand of softballs. Model : YS44NCYXT - 12 - SYCO Cover - .44 COR - 400 lbs Comp - Black Stitch - Sold and Priced per Dozen