Tinker
Clearly explained in the article
"Urethane or Surlyn?
When it comes to the cover material of your golf ball, you've got two main choices - Urethane and Suryln.
Urethane is softer, thinner, and offers complete performance from tee to green. While some Surlyn offerings may offer more distance, urethane balls will spin more, and perform more consistently on the various shots that you'll face around the green, and across the entire golf course.
Surlyn is a great value option, but with plenty of affordable urethane offerings available in today's market, you don't need to sacrifice performance to save a few bucks."
MG Tour C4 $19.99
Cut Blue $19.95
Cut Grey $19.95
Kirkland Signature 3-Piece $11.99