ALUMINIUM STUDS IDEAL FOR HUMID GROUNDS
Football boots with SG studs (aluminium studs) are used to obtain a maximum penetration on the pitch securing the best grip possible. They should only be used on surfaces where the studs go all the way into the ground, because by having 6 to 8 points of support, if the studs don't get stuck in, discomfort and some pain will generate in the sole of your foot.
Very recomendable: Wet or humid natural grass.
Recomendable: Dry natural grass.
Avoid on: Artificial grass or turf.