Thanks for the quick replies! With that being said, anyone know if there's anything special with the Mix cover? Heard rumors that it's a polyester-urethane blend. Plus it seems interesting that a pure urethane can shine up like that, making it hard to believe the ball is just urethane. Not saying it isn't though.
99% sure this is old urethane. Storm lists it a "U1S" urethane.
The Supernatural which was listed as "U3S", was definitely a resin/urethane blend.
The Natural was listed as "U2S".
The way the Green Pearl Mix rolls, I'm fairly sure it is old urethane. Usually only the factory can get such a shine on urethane; but mine was manufactured in China, where they have fewer EPA/environmental standards. Remember also that the more a urethane is shined the less it hooks, unlike resin.