The compression running sock support the calf during high intensive activities. The compression stabilized the muscles of the calf, reduces tiredness and reduces the chance of injuries.
Next to the compression running sock, there is also the tube. The benefits of the tube are: the runner can wear their own running socks, the tube does not have to be washed every time. The runner has to take the tube off after the run, to prevent squeezing of the feet.
The tubes and compression running socks of Herzog are really tight, they offer more compression than the other brands. The compression running socks of Falke offers less compression.