Matter 100mm wheels for speedskaters.
Engineered for track and wet conditions. F4 track corresponds to durometer 80A-81A.
Clear XG marks a significant advancement in grip, specifically designed for cement surfaces. If Clear XG (extreme grip) fails to grip, then no wheel on earth can.
The most gripping wheel on our planet.
Suggested surfaces: cement tracks that require the highest level of grip, also an excellent rain wheel