Anti - Anti-spin rubber is an inverted sheet of rubber featuring a very slick top sheet with a "dead" sponge layer. The resulting effect is a rubber sheet that is excellent for blocking, returning serves and great for changing the pace. For those that rarely use both sides of the racket during play, anti-spin rubber would be ideal for the backside. Your opponent will generally find himself confronted with a ball with little rotation, or a "knuckle" ball. This tends to lead to a ball that you can easily attack. A great addition to your arsenal.