Matter 100mm wheels for speedskaters.
Developed for track and rain conditions. F4 track equals durometer 80A-81A.
Clear XG is a new milestone in grip and was specifically formulated for cement surfaces. If Clear XG (extrem grip) does not grip than no wheel on earth will grip.
Best gripping wheel on our planet.
Recommended surfaces: cement tracks which demand the ultimate grip, also great rain wheel.
Matter wheels from USA uses the Footprint scale, the F1 stands for footprint 1.
F1 - equals approx. 85A
F2 - equals approx. 84A
F3 - equals approx. 83A