The ball is a full sized yoga/exercise ball which is used as a soccer ball to try to get into the apposing team's "goal". This is full contact (thanks...
Sumo Soccer is a mix between Sumo wrestling and Soccer (Futbol although Sumo Futbol doesn't sound as good)_
Step 1: Play Desciption
Participants (10 per team) wear the full padding used in self defense courses (where you get to beat the schmack out of the "assailant") or for police dog training thus giving them a Sumo wrestler type physique and very good protection.