Clear middle fibre edge anti-scuff sheet, all of the current stock are SS TON Players scuff sheets and are very high quality.
Anti-scuff sheets are incredibly important when it comes to protecting your bat, I highly recommend using one. It can be very helpful when keeping water/dirt off of the face, as well as helping reduce the effects of the usual wear and tear.
You often see these get called "hammer edge anti-scuff sheets".
