The ball 1 wherein said polyurethane foam material consists of 60 parts isocyanate and {HEAD ~ 100 parts} of {TAIL ~ a resin mixture} and a blowing agent combined to form the outer core of a regular flight softball 
of
The ball 1 wherein said polyurethane foam material consists of 60 parts isocyanate and { HEAD ~ 100 parts } of { TAIL ~ a resin mixture } and a blowing agent combined to form the outer core of a regular flight softball
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH