I tried out the 20XI-X last week while playing a couple of holes after completing a day on the lesson tee. I have to admit; I hadn’t warmed up or even stretched like I tell my students to do. I was anxious to get to the course and try out this new ball I had heard so much about. I really didn’t know what to expect or if I would even be able to tell that much of a difference.
 

Well, I would like to report back to you that I can really tell a difference! I could feel the ball explode off the face of the club, it seemed to hang in the air longer than I am accustomed, and I got added distance. My only complaint was that I ran out of daylight and wasn’t able to try out the 20XI-S.
 

What makes this new 4-piece ball different from previous ball designs is the lightweight rubber-less core made of polymer. By making the core lighter, Nike has achieved a higher MOI (moment of inertia) with a heavier outer layer. What this means for you is a tee shot with less spin which produces better carry and control. The 20XI-S has a soft urethane cover for maximum spin and feel and the 20XI-X has a firmer cover for lower spin and more length.
 

My advice to you is to get them as soon as you can because retailers will not be able to keep them in stock. They are just that good!