HG STUDS IDEAL FOR HARD GROUND
Football boots with HG (hard ground) soles are manufactured with materials that prevent erosion from playing on hard ground. This resistance, is achieved by making the materials of the sole more resistant, sacrificing some of the flexibility, and adding more studs than normal.
Very recomendable: 1st generation artificial grass and turf.
Recomendable: Last generation artificial grass.
Avoid on: Natural grass.