SPRING is a wheel series for roller skates for recreational and sports skating to racing use. This wheel series is primarily intended for freestyle skating. Its material, shape, hardness is adapted primarily for asphalt and concrete surfaces with finely rough surface. PU blend tolerates less quality surfaces. SPRING wheel excels in extremely low rolling resistance, extended life and ensures high ride comfort. Wheels Spring are equally suited for fitness skating on quality rather in-line paths, where their life can be in the hundreds of kilometers..