Dudley ASA 12" Thunder Hycon Slowpitch Softball Hit it out of the park in the Dudley ASA Leather Slowpitch Softball. This ball features a precision blended crosslinked polyurethane system that improves ball durability, reduces bat damage, and reduces bat vibration “sting” on contact. It is built with a unique gluing process that bonds the cover to a poly core. The covering is composed of quality optic yellow leather with red stitching. .52 COR. 300 lbs. compression. Sold in dozens.